CN105779782B - Carry out the ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp - Google Patents

Carry out the ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp Download PDF

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CN105779782B
CN105779782B CN201610203848.3A CN201610203848A CN105779782B CN 105779782 B CN105779782 B CN 105779782B CN 201610203848 A CN201610203848 A CN 201610203848A CN 105779782 B CN105779782 B CN 105779782B
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sieve
gold
pulp
dilute
ore pulp
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CN105779782A (en
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周庆华
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Kunming University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00Obtaining noble metals
    • C22B11/04Obtaining noble metals by wet processes
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00Preliminary treatment of ores or scrap
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/22Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
    • C22B3/24Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention discloses the ore pulp extraction of gold process for carrying out substep in a manner of sifting out thin liquid pulp, separate the lower slurry of sieve and sieve starching to the dilute concentration of levigate ore pulp sieve, sieve starching is leached later;In multistage flow, also to the dilute concentration of ore pulp sieve leached in advance or sieve dilute filter and separate that sieve is lower to be starched, the lower thin liquid pulp of sieve is handled, and conventional ore pulp gold extracting method is applied in combination in back segment with activated carbon or resin.It wherein sieves dilute concentration plug-type hang made of the patent CN201520280642.1 of the present inventor and rolls over oscillatory type extension folding sieve made of sieve or CN201520280643.6 to realize, the dilute filter of sieve is realized to sieve for the filter press of filter medium.It is an advantage of the invention that sieve dilute concentration substitution clarification concentration, dehydration is quick, low cost, hangs the dehydration efficiency of folding sieve and can give full play to, sedimentation basin desliming process can be saved to thin liquid pulp;For the multistage flow with activated carbon adsorption, thin liquid pulp is small to the rich abrasion for carrying gold and silver charcoal, and the gold and silver being lost in breeze is few.

Description

Carry out the ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp
Technical field
The present invention relates to the ore pulp extraction of gold process for carrying out substep in a manner of sifting out thin liquid pulp, belong to noble metal selecting and smelting technology neck Domain.
Background technology
At present, gold and silver generally use carbon-in-pulp process is recycled from gold ore or Gold Concentrate under Normal Pressure, there are two types of flow configuration shapes for carbon-in-pulp process Formula, one kind be first leach after adsorption process, abbreviation CIP flows, another kind be while leach while adsorption process, abbreviation CIL flows.It is public Carbon-in-pulp process CIP and the CIL flow known is as shown in Figure 1, part is the defects of carbon-in-pulp process CIP and CIL and resin in pulp process:
1)Thinner to the granularity requirements of levigate ore pulp, pulp density is diluter, thus just needs to the ore pulp before leaching It is concentrated, not only improves the volume for reducing and leaching tank diameter in this way, be also beneficial to directly filter the ore pulp after leaching, Concentrator can be selected to be concentrated by existing technology thus, though clear overflow can be separated in this way, due to concentrator Build is big and need to erect its bottom of pond, also high to the antiseep requirement of concentrator, so Civil Cost is just high;With all sliming cyanidation Normal conditions perform an analysis, based on concentrator feed pulp density 28%, underflow pulp density 40%, can to calculate still have 58% Liquid holdup is in underflow, if based on underflow pulp density 55%, the liquid that can be calculated in underflow drops to 32%;Due to concentrator Type selecting by overflow clarification based on, for underflow pulp density be 40%~60% value range, that thus calculates is dense Close machine specification is equally big;If, only need to be by slurry concentrating to 40% for leaching the concentration before adsorption operation, therefore be concentrator More investment in consumption does not but allow concentration efficiency to be not fully exerted;If it and is used for for laundry operation, underflow pulp density Higher, the liquid fraction in underflow is fewer, and detersive efficiency is higher, but can only achieve 55%~60% with concentrator concentration, it is difficult to carry To higher;
2)The pulp density of carbon-in-pulp process should be suitble to leaching to require, avoid again activated carbon in groove body on drift or under It is heavy, thus levigate ore pulp need it is first concentrated can just feed in carbon-in-pulp process CIP or CIL flow, according to inflate to stir Pachuca will avoid dense ore pulp deep gouge, and the power consumption of required compressed-air system is larger, seldom use now;It uses at present more Mechanical agitation adds the leaching equipment of inflation, wherein inflation, which meets gold and silver, dissolves required oxygen, and it is the disperse of oxygen and dissolving, anti- The diffusion of object and mass transfer is answered to be required to the impeller rotated and provide to ore pulp necessary stirring intensity;But since active carbonaceous is crisp easily Broken, intolerant to abrasion, phase mutual friction between activated carbon and stirring blade and baffle can generate part particulate charcoal, when countercurrently carrying charcoal, because It is difficult to separate the particulate charcoal that this partial adsorbates has gold and silver from ore pulp, and is lost in tailing, thus can cause gold and silver Loss;
3)For resin in pulp process, although resin has the advantages that smooth surface, high mechanical strength, abrasion are small, Since the density of wet resin is 1.04 t/m3Left and right, and 1.32 t/m of density of wet coconut husk charcoal3, density during pulp density 40% Also it is 1.32 t/m3, the density contrast of wet resin and ore pulp is easily led to be floated on resin, destroys the good contact and biography of resin and ore pulp Matter;It is floated in order to avoid resin is largely upper, resin size need to be made smaller, resin is made to be more easy to flow with ore pulp, however resin particle Spend smaller, the separation of gold loaded resin and ore pulp is more difficult;Thus, it is common practice to compromise, resin size is more slightly smaller, Dispersion of the resin in ore pulp is allowed slightly uniformly, to realize the separation of gold loaded resin and ore pulp.
From the point of view of the flowage structure of well known carbon-in-pulp process CIP and CIL and resin in pulp process, leach absorption with washing and Separation of solid and liquid is to intersect to carry out, if therefore change it is original based on clarification concentration come in a manner of carrying out separation of solid and liquid, so that it may To change the mode of action for leaching, adsorbing and washing.
The first patent CN201520280643.6 of one of which of the present inventor discloses a kind of oscillatory type and hangs folding sieve, the sieve Machine includes backing slot between rack, several string sieve units, Chuan Zhen mechanisms, exciting agency, machine bottom chute and string, wherein hanging over rack On each string sieve unit be hollow connection cavity, shake sieve chamber by the setting of vertical merogenesis, inclined surface is provided with sieve, often saves The sieve chamber that shakes is transferred in " it " shape, the biography of each Jie Chuanzhen mechanisms is driven to be shaken frame up-down vibration with exciting agency, so as to be located at The same biography sieve chamber that shakes of whole sieve unit isometry positions on frame that shakes is combined vibration, thus transfers vibrations to shake and sieves chamber On compass screen surface.
The first patent CN201520280642.1 of another of the present inventor discloses a kind of plug-type folding of hanging and sieves, the screen(ing) machine Including backing slot between rack, several string sieve units, push-pull mechanism, transmission system, machine bottom chute and string;Wherein hang in rack Each string sieve unit be hollow connection cavity, dynamic sieve chamber group is set by vertical merogenesis, the two sided of sieve chamber is provided with sieve Net, variable-angle turnover when the sieve chamber of dynamic sieve chamber group is pushed and pulled, drives each push-pull rod of push-pull mechanism to do with transmission system Reciprocating sliding acts, and is combined and waved with the sieve chamber for affecting the whole sieve unit isometry positions for being located at same push-pull rod, made The compass screen surface of each sieve chamber replaces rotation downward and upward.
It is above-mentioned both hang folding sieve with concentrator dehydration the difference lies in:It is wide, quick de- with feedstock concentrations range The characteristics of water, low cost, though the lower slurry of sieve is not limpid can to control very dilute degree, both, which hang to roll over, sieves separated sieve The concentrator that lower slurry need not use cost high, the sedimentation basin that can use low cost instead carry out gravitational settling dehydration;And to both When hanging folding sieve and carrying out type selecting, the height of sieve unit is come fixed, in the feelings reduced investment outlay according to the concentration requirement of sieve starching Under condition, both concentration efficiency for hanging folding sieve can still be made to be not fully exerted.
Invention content
The conception of the present invention is:Using plug-type extension made of the first patent CN201520280642.1 of the present inventor It rolls over oscillatory type made of sieve or/and CN201520280643.6 and hangs folding sieve, thin liquid pulp is is sifted out to obtain by the mode of action Dense ore pulp, it is different with clarification concentration, it is not necessary to which that deliberately the lower slurry of requirement sieve is limpid;In order to the clarification enrichment region on ordinary meaning It does not come, the concentration operation carried out with sifting out thin liquid pulp to obtain dense ore pulp is referred to as to sieve dilute concentration.In view of both It hangs folding sieve sieve starching is only capable of playing the role of concentration, to greater proportion of moisture is transferred out from sieve starching, Ke Yiyong Filtering or press filtration, and realize less equipment investment, the more ore deposit amounts of processing in a manner of sifting out thin liquid pulp, suitably increased The mesh of filter medium can accelerate the rate of filtration, also need not deliberately require filtrate limpid at this time;It for this purpose, will be to sift out thin liquid pulp It is referred to as to sieve dilute filter to obtain filtering that filter cake carried out or press filtration operation.
Usually, vacuum filter and plate and frame filter press be using filter cloth as filter medium, for vacuum filter, After increasing mesh, just there are more air permeables, thus can reduce filter efficiency;For filter cloth, after increasing mesh, yarn holds Easily offset, it is difficult to control mesh uniform;And for sieve, after increasing mesh, it can accomplish wire is exceptionally straight to avoid it Offset, prolonged use still can keep mesh uniform;Therefore it selects sieve dilute filter more using sieve as the filter press of filter medium It is suitable.
Ore particle either in thin liquid pulp need to soak again or thin liquid pulp in medicament need to recycle, to accomplish it Return using and it is little to the influence leached and adsorbed, as long as thin liquid pulp is suitably dilute, it is not necessary to deliberately slurries are precipitated very limpid, Therefore it need not increase the process that mud-water separation is carried out with sedimentation basin.
The characteristics of rapidly separating thin liquid pulp using both extension folding sieves and the press filtration function using sieve as filter medium, comes Substep is carried out to ore pulp extraction of gold process flow, so as to the mode of action for changing leaching, adsorbing and embathing.
For above-mentioned conception, technical scheme of the present invention is drafted respectively carry gold for single hop, two sections and three sections of ore pulps below Technique.
Single hop technical solution is:Carry out the single hop ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp, include successively Grind grading, at first sieve dilute concentration, conventional ore pulp carries gold, each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition protection alkali, after being classified and excluding sawdust, discharge levigate ore pulp;
It is described at first to sieve dilute concentration:Levigate ore pulp obtained by grind grading is carried out sieving dilute concentration, to separate under at first sieve Slurry and at first sieve starching, at first the lower mass concentration starched of sieve is 3%~6% for control, at first sieve the mass concentration of starching for 35%~ 45%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The routine ore pulp carries gold:By the carbon-in-leach process or resin in pulp process that at first sieve starching routine obtained by step before Gold is carried, step addition gold lixivant blasts air or blasts air while add cooxidant, isolated after absorption Gold loaded carbon or gold loaded resin are left phase analysis slurry.
Two sections of technical solutions are:Carry out two sections of ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp, include successively At first grind grading sieves dilute concentration, leading portion leaches, leading portion sieves dilute concentration or sieves dilute filter, thin liquid pulp absorption and separation, routine ore pulp Carry gold, wherein grind grading, at first sieve that dilute concentration is identical with single hop technical solution, and the feature of step is thereafter:
The leading portion leaches:At first the at first sieve starching sieved obtained by dilute concentration is stirred leaching, step addition leaching Golden medicament blasts air or blasts air while add cooxidant;
The leading portion sieve is dilute to concentrate or sieves dilute filter:The ore pulp that leading portion leaching process is crossed carries out sieving dilute concentration or sieves dilute filter, To sift out the lower slurry of leading portion sieve, the lower mass concentration starched of control leading portion sieve is 3%~6%;For sieving dilute concentration, before staying on sieve and being Section sieve starching, the mass concentration of control leading portion sieve starching is 55%~65%;For sieving dilute filter, it is leading portion filter cake to stay on sieve, The moisture content for controlling leading portion filter cake is 15%~20%;
The thin liquid pulp absorption and separation:Slurry under sieve obtained by step before has been leached by activated carbon or resin to adsorb Gold or silver, and isolate gold loaded carbon or gold loaded resin, be left the poor slurry of leading portion;The poor grind grading starched before returning to of leading portion To replace clear water, clear water is added in the water shortage part for returning to slurry for middle recycling;
The routine ore pulp carries gold:By the sieve starching obtained by step before or filter cake size mixing to mass concentration for 35%~ 45%, gold is carried with conventional carbon-in-leach process or resin in pulp process, which adds gold lixivant, blasts air or to blast air same When add cooxidant, back segment is isolated after absorption and goes out charcoal or back segment resin, be left phase analysis slurry.
Three sections of technical solutions:Carry out three sections of ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp, it is contemplated that work as institute When the Gold Concentrate under Normal Pressure of processing needs to increase leaching and washing times, in two sections of ore pulp extraction of gold process, embedded stage casing is leached and stage casing Sieve dilute concentration or sieve dilute filter, become three sections of ore pulp extraction of gold process, technological process include successively grind grading, at first sieve it is dilute dense Contracting, leading portion leach, leading portion sieve it is dilute concentration or sieve it is dilute filter, stage casing leach, stage casing sieve it is dilute concentration or sieve it is dilute filter, thin liquid pulp absorption and point Carry gold from, conventional ore pulp, wherein grind grading, at first sieve dilute concentration, leading portion leaches, the dilute concentration of leading portion sieve or sieves dilute filter and two sections Technical solution is identical, and the feature of step is thereafter:
It leaches in the stage casing:Leading portion sieve starching or leading portion filter cake that leading portion sieves dilute concentration or sieves obtained by dilute filter are sized mixing to matter A concentration of 35%~45% is measured, and carries out leaching, which adds gold lixivant, blasts air or blasts air simultaneously Add cooxidant;
The stage casing sieve is dilute to concentrate or sieves dilute filter:The ore pulp that stage casing leaching process is crossed carries out sieving dilute concentration or sieves dilute filter, To sift out the lower slurry of stage casing sieve, the control stage casing lower mass concentration starched of sieve is 3%~6%;For sieving dilute concentration, in staying on sieve and being Section sieve starching, the mass concentration of control stage casing sieve starching is 55%~65%;For sieving dilute filter, it is stage casing filter cake to stay on sieve, The moisture content for controlling stage casing filter cake is 15%~20%.
The thin liquid pulp absorption and separation:Dilute lower slurry of stage casing sieve for concentrating or sieving obtained by dilute filter is sieved into stage casing and leading portion sieve is dilute It concentrates or sieves the lower slurry of the sieve of the leading portion obtained by dilute filter to converge, thin liquid pulp absorption and separation are carried out, to be left the preceding poor slurry in stage casing;Preceding stage casing It is recycled in the poor grind grading starched before returning to replace clear water, clear water is added in the water shortage part for returning to slurry;
The routine ore pulp carries gold:Starching or stage casing filter cake are sieved into the stage casing that stage casing is sieved dilute concentration or sieved obtained by dilute filter, is adjusted Slurry to mass concentration is 35%~45%, carries gold with conventional carbon-in-leach process or resin in pulp process, which adds gold lixivant, blasts Air blasts air while adds cooxidant, and back segment is isolated after absorption and goes out charcoal or back segment resin, is left phase analysis Slurry.
In ore pulp extraction of gold process flow, if carry the processed phase analysis slurry of gold as true tailings slurry through conventional ore pulp, with And in order to utilize the Residuals in liquid phase, and the tailing amount of liquid for needing to disinfect is reduced, further include back segment and sieve dilute filter, it will The phase analysis slurry that conventional ore pulp is carried obtained by gold carries out the dilute filter of back segment sieve to separate the poor slurry of back segment and phase analysis filter cake, the control poor slurry of back segment Mass concentration is 3%~6%, and the moisture content of phase analysis filter cake is 15%~20%;Wherein, in single hop ore pulp extraction of gold process, back segment is poor It starches and recycles to replace clear water in the grind grading before returning to;In two sections of ore pulp extraction of gold process, the poor slurry of back segment returns It is carried to grind grading before and conventional ore pulp and recycles to replace clear water in the step of gold;In three sections of ore pulp extraction of gold process In, the poor grind grading starched before returning to of back segment, stage casing leach and conventional ore pulp carries in the step of gold and recycles to replace Clear water;Add clear water in the water shortage part for returning to slurry.
If the present invention is for handling gold ore of the gold-bearing material for broken mistake, single hop or two sections of ore pulp extraction of gold process are selected, In grind grading step, it is 20%~35% to control the mass concentration of levigate ore pulp, grade quality for account for 85% less than 74 μm~ 95%。
If the present invention is for handling gold-bearing material as Gold Concentrate under Normal Pressure, two sections or three sections of ore pulp extraction of gold process are selected, in ore grinding In classification step, the mass concentration for controlling levigate ore pulp is 15%~25%, and grade quality is accounts for 90% less than 45 μm to less than 37 It μm accounts between 95%.
In two sections or three sections of ore pulp extraction of gold process, it is contemplated that its stage casing and back segment have both leaching and cleaning function, therefore Main Leach reaction should be made to be happened at leading portion leaching, leached anti-in the step of because there are Residuals and returning to medicament later It can should still carry out;In order to find the best dosing in stage casing and back segment, leached in the stage casing and/or conventional ore pulp carries gold In, add gold lixivant.
At first the equipment choosing patent for sieving dilute concentration, the dilute concentration of leading portion sieve, the dilute concentration of stage casing sieve A kind of plug-type hang rolls over a kind of vibration disclosed in sieve or patent CN201520280643.6 disclosed in CN201520280642.1 Formula hangs folding sieve.
The leading portion sieves the equipment choosing of dilute filter, the dilute filter of stage casing sieve, the dilute filter of back segment sieve using sieve as the press filtration of filter medium Machine.
In ore pulp extraction of gold process, the throwing people amount that the routine ore pulp carries activated carbon used in carbon-in-leach process in gold is 10~30 kg/m3(By unit ore pulp volumeter, similarly hereinafter), wherein in two sections or three sections of technical solutions, in order to improve final gold loaded carbon Containing gold(Silver)Grade, when industrial production starts, conventional ore pulp carries gold and thin liquid pulp absorption and separating step activated carbon in sky It carries, conventional ore pulp then carried into the back segment that separates of gold backward goes out charcoal and be transplanted on thin liquid pulp absorption and detach to replace unloaded charcoal, back segment Go out the load gold of charcoal(Silver)Saturation degree is carried gold and mutually balanced with thin liquid pulp absorption and the working load detached with conventional ore pulp to be advisable.
In ore pulp extraction of gold process, the throwing people amount that the routine ore pulp carries golden resin is 3~9 kg/m3, wherein at two sections Or in three sections of technical solutions, in order to improve final gold loaded resin containing gold and silver-colored grade, when industrial production starts, conventional ore pulp Gold and the resin of thin liquid pulp absorption and separating step are carried in zero load;Conventional ore pulp then is carried the golden back segment resin separated backward to move It is sent to thin liquid pulp absorption and detaches to replace unloaded resin, the load gold of back segment resin(Silver)Saturation degree with conventional ore pulp carry gold with it is dilute Pulp sorbtion and the working load of separation, which mutually balance, to be advisable.
When selection activated carbon is come when adsorbing, in order to avoid abrasion of the mechanical agitation impeller to rich gold loaded carbon, the thin liquid pulp Absorption and the equipment choosing of separating step are inflated with inflating the pachuca to stir with pressure fan to pachuca.It is elected Resin is selected when adsorbing, since resin specific activity charcoal is more resistant, to be adsorbed to the thin liquid pulp and the equipment of separating step is without spy It does not require, can for example select leaching bothrium.
In the technological process of the present invention, used protection alkali, gold lixivant and cooxidant are well known technology, During the technology of the present invention is promoted towards industrial production, middle-size and small-size leaching test should be carried out by the stepped approach of the present invention And economical comparision determines suitable regime of agent and extraction time, makees below with regard to regime of agent and extraction time as follows Explanation:
The protection alkali of the grind grading step is quick lime, white lime, sodium carbonate, sodium hydroxide, potassium hydroxide, ammonium hydroxide At least one of;The leading portion leaches, stage casing is leached, conventional ore pulp carry golden step gold lixivant be Cymag, potassium cyanide, At least one of cyanogas;The leading portion leaches, stage casing is leached, to carry the cooxidant of golden step be oxygen-enriched to conventional ore pulp At least one of air, calper calcium peroxide, hydrogen peroxide, ferricyanate, hypochlorite, when cooxidant is to shorten leaching Between, reduce gold lixivant dosage, optimization leaching effect.
According to the characteristic of gold ore, golden step when handling, is carried for the conventional ore pulp with single hop ore pulp extraction of gold process Suddenly, addition Cymag makes its content in ore pulp be 0.5~3.5kg/t(Based on gold-bearing material, similarly hereinafter), when the air blasted When making liquid phase oxygen content maintenance 5mg/L, extraction time is 12~48h.
According to the characteristic of gold ore, when handling, for the leading portion leaching step, added with two sections of ore pulp extraction of gold process Add the content that Cymag makes it in ore pulp for 0.5~3.5kg/t, when the air blasted makes liquid phase oxygen content maintain 5mg/L, Extraction time is 12~32h;Golden step is carried for the conventional ore pulp, the content that adding Cymag makes it in ore pulp is 0.25~1.0kg/t, when the air blasted makes liquid phase oxygen content maintain 5mg/L, extraction time is 6~12h.
According to the characteristic of Gold Concentrate under Normal Pressure, when handling, the leading portion is leached with two sections or three sections of ore pulp extraction of gold process Step, addition Cymag make its content in ore pulp for 3~10 kg/t, when the air blasted maintains liquid phase oxygen content During 5mg/L, extraction time is 24~72h;Golden step is carried for the conventional ore pulp, adding Cymag makes it in ore pulp Content is 1~3 kg/t, and when the air blasted makes liquid phase oxygen content maintain 5mg/L, extraction time is 6~12h.
According to the characteristic of Gold Concentrate under Normal Pressure, when handling, for the stage casing leaching step, mended with three sections of ore pulp extraction of gold process Add the content that Cymag makes it in ore pulp for 2~5 kg/t, when the air blasted makes liquid phase oxygen content maintain 5mg/L, leaching Go out the time for 12~for 24 hours.
Various poor slurries are after recycling after a period of time, if there is foreign ion Accumulation Phenomenon, according to impurity The type of ion drafts impurity-removing method, and impurity-removing method has well known technology, removal of impurities lean solution, which returns, to be used;If do not occur impurity Ion accumulation phenomenon can bear incidentally to take away foreign ion, then need not set except auxiliary work by gold loaded carbon or gold loaded resin.
In addition, to gold loaded carbon or gold loaded resin by well known technical finesse to obtain Jin Heyin, stripping liquid and regenerated carbon Or regenerating resin, stripping liquid are carried in golden flow back to ore pulp using to replace clear water, regenerated carbon or regenerating resin after removal of impurities It carries in golden flow and using back to ore pulp.
Compared with existing carbon-in-pulp process CIP and CIL flows and resin in pulp process, the present invention has following advantage:
1)To sieve dilute concentration substitution clarification concentration, and it is aided with the dilute leaching generation filtering of sieve or press filtration, sieves dilute concentration with two kinds of extensions Folding sieves to realize, sieves dilute filter and realized to sieve for the filter press of filter medium;It so, both can be by the lower slurry control of sieve To very dilute degree, and big, antiseep high, the high concentrator of Civil Cost need not be required using build, wherein with folding sieve institute is hung The dilute concentration of sieve of progress has the characteristics that wide feedstock concentrations range, fast dewatering, low cost, concentration efficiency can give full play to;With The dilute filter of sieve carried out using sieve by the filter press of filter medium is with filtering velocity is fast, filter cake moisture content is low, can be promoted at unit Reason ability saves the characteristics of equipment manufacturing cost.
2)Either at first the lower ore particle starched of sieve need to soak again or leading portion sieve it is lower starch or the lower slurry of stage casing sieve through adsorb and point It needs to recycle from medicament later, when the ore pulp containing a small amount of ore particle returns, the ore particle that previous round sifts is in a circulating manner Finally enter sieve starching or filter cake in, due to sieve it is dilute concentration or sieve it is dilute filter it is of less demanding to what is detached by granule size, Therefore fine-graded circulative accumulation will not be caused, the cycle of a small amount of ore particle is little to the influence leached and adsorbed, and only to poor The circulative accumulation of foreign ion needs to monitor in slurry, and foreign ion is purged every a period of time;So, at first Sieve is lower to be starched, it is not necessary to be increased sedimentation basin and is used for carrying out mud-water separation;Leading portion is sieved and is starched under lower slurry or stage casing sieve, it is miscellaneous not needing to remove In the most of time of matter ion, sedimentation basin desliming process can also be saved before and after absorption.
3)The hop count of technological process is flexibly set according to the characteristic of gold-bearing material, when for handling low grade gold ore When, preferably using single hop ore pulp extraction of gold process, with simplification of flowsheet;When for handling compared with high-grade gold ore, preferably using two Section ore pulp extraction of gold process;When for handling Gold Concentrate under Normal Pressure, preferably using two sections or three sections of ore pulp extraction of gold process, using sieve dilute concentration or Liquid is transferred in thin liquid pulp by the solid-liquid separation method for sieving dilute filter, is sized mixing to sieve starching or filter cake, so, then is soaked again Operation has just had both cleaning function, is conducive to improve total leaching rate, total Washing ratio and total adsorption rate.
4)For two sections adsorbed with activated carbon or three sections of ore pulp extraction of gold process, by adjusting the regime of agent of leaching, It can control that leading portion leaches and stage casing leaches and dissolves higher proportion of gold and silver, then with sieve dilute concentration or sieve dilute filter will be in advance The part of leaching is shifted in advance, and going out charcoal since conventional ore pulp is carried the back segment that golden step separates is transplanted on thin liquid pulp absorption and separation Thus step can realize that thin liquid pulp absorption and separating step are to be contacted with the thin liquid pulp containing rich golden liquid with rich gold loaded carbon, and For thin liquid pulp, using needed for pachuca press wind it is lower, thus just accomplished low dynamics consumption under the conditions of, with air-flow without It is to move rich gold loaded carbon with impeller, and it is to carry gold with poor with impeller and the dense ore pulp containing poor gold liquid that conventional ore pulp, which puies forward golden step, Charcoal contacts;So, the denseer abrasion to poor gold loaded carbon of ore pulp is bigger, and the diluter abrasion to rich gold loaded carbon of ore pulp is smaller;It is right Than from the point of view of, more only poor gold loaded carbon is worn, thus reduces loss of the gold and silver with broken charcoal on the whole.
5)For two sections adsorbed with resin or three sections of ore pulp extraction of gold process, carried out with resin to handle thin liquid pulp Absorption and separating step in, since the density of thin liquid pulp and the density of resin approach, resin is able to spread more evenly across in dilute In ore pulp, and sift out gold loaded resin ratio from thin liquid pulp and sifted out easily from dense ore pulp.
Description of the drawings
In various embodiments of the present invention, if being adsorbed with activated carbon, corresponding ore pulp extraction of gold process is referred to as charcoal slurry Method;If being adsorbed with resin, corresponding ore pulp extraction of gold process is referred to as resin in pulp process.
Fig. 1 is well known carbon-in-pulp process CIP and CIL flow charts;
Fig. 2 is processing gold ore described in embodiment 1 to sift out the single hop carbon-in-pulp process flow chart of thin liquid pulp substep;
Fig. 3 is for the processing gold ore described in embodiment 2 to sift out the single hop resin in pulp process flow chart of thin liquid pulp substep;
Fig. 4 is processing gold ore described in embodiment 3 to sift out the two of thin liquid pulp substep sections of carbon-in-pulp process flow charts;
Fig. 5 is for the processing Gold Concentrate under Normal Pressure described in embodiment 4 to sift out the two of thin liquid pulp substep sections of resin in pulp process flow charts;
Fig. 6 is for the processing Gold Concentrate under Normal Pressure described in embodiment 5 to sift out the two of thin liquid pulp substep sections of carbon-in-pulp process flow charts;
Fig. 7 is for the processing Gold Concentrate under Normal Pressure described in embodiment 6 to sift out the three of thin liquid pulp substep sections of carbon-in-pulp process flow charts.
Specific embodiment
It is described in further detail with reference to the accompanying drawings and examples.
Embodiment one
Embodiment 1 is to handle gold ore to sift out the single hop carbon-in-pulp process of thin liquid pulp substep, and gold-bearing material is Lateritic Soil gold Ore deposit, Chemical bath deposition Au:2.8g/t, Ag:46g/t, Cu:0.6%, Fe:38%, flow as shown in Fig. 2, include successively Grind grading, at first sieve dilute concentration, conventional ore pulp carries gold, each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition quick lime 10kg/t, slurry pH is transferred to 11, after being classified and excluding sawdust, discharge levigate ore pulp, control The mass concentration for making levigate ore pulp is 22%, and grade quality is to account for 95% less than 74 μm;
It is described at first to sieve dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, by the levigate ore deposit obtained by grind grading Slurry carries out sieving dilute concentration, and to separate the lower slurry of at first sieve and at first sieve starching, at first the lower mass concentration starched of sieve is 5% for control, at first The mass concentration for sieving starching is 40%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The routine ore pulp carries gold:At first the at first sieve starching sieved obtained by dilute concentration is carried into gold with conventional carbon-in-leach process, the step Rapid addition Cymag makes its content in ore pulp be 2.5kg/t(Based on gold-bearing material, similarly hereinafter), when the air blasted makes liquid phase During oxygen content maintenance 5mg/L, extraction time is for 24 hours, is also attached to part silver and copper leaching, selection coconut husk during gold is soaked Activated carbon, the throwing people amount of activated carbon is 20kg/m3(By unit ore pulp volumeter, similarly hereinafter), isolated after absorption containing gold and silver The gold loaded carbon of copper is left phase analysis slurry;
To gold loaded carbon by well known technical finesse to obtain gold, silver, copper, stripping liquid and regenerated carbon, stripping liquid is through removal of impurities It is returned to afterwards using to replace clear water in grind grading, regenerated carbon is carried in gold back to conventional ore pulp and being used.
Embodiment two
Embodiment 2 is to handle gold ore to sift out the single hop resin in pulp process of thin liquid pulp substep, and gold-bearing material is quartz Arteries and veins type gold containing ore and altered rock-type gold containing ore are formed with ore deposit, gold grade Au:5.5g/t, flow as shown in figure 3, according to It is secondary including grind grading, at first sieve dilute concentration, conventional ore pulp carries gold, back segment sieves dilute filter, each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition quick lime 4kg/t, slurry pH is transferred to 11, after being classified and excluding sawdust, discharge levigate ore pulp, control The mass concentration of levigate ore pulp is 30%, and grade quality is to account for 90% less than 74 μm;
It is described at first to sieve dilute concentration:The equipment choosing oscillatory type of the operation hangs folding sieve, by the levigate ore deposit obtained by grind grading Slurry carries out sieving dilute concentration, and to separate the lower slurry of at first sieve and at first sieve starching, at first the lower mass concentration starched of sieve is 4% for control, at first The mass concentration for sieving starching is 35%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The routine ore pulp carries gold:At first the at first sieve starching sieved obtained by dilute concentration is carried into gold with usual resins pulp process, Step addition Cymag makes its content in ore pulp be 0.9kg/t(Based on gold-bearing material, similarly hereinafter), when the air blasted makes When liquid phase oxygen content maintains 5mg/L, extraction time 36h, the D301G type resins that Chemical Plant of Nankai Univ. is selected to produce, resin Throwing people amount for 5kg/m3, the gold loaded carbon containing gold, silver and bronze is isolated after absorption, is left phase analysis slurry;
The back segment sieves dilute filter:The equipment choosing of the operation carries conventional ore pulp using sieve as the filter press of filter medium The phase analysis slurry of golden gained sieve dilute filter to separate the poor slurry of back segment and phase analysis filter cake, and the mass concentration of the control poor slurry of back segment is 4%, The moisture content of phase analysis filter cake is 18%;It recycles to replace clear water in the poor grind grading starched before returning to of back segment;
Since the adsorption capacity of resin is big, selectivity is poor, foreign ion is accumulated in gold loaded resin, without accumulating on Back segment is sieved in the poor slurry of back segment obtained by dilute filter;To gold loaded resin by well known technical finesse to obtain gold, stripping liquid and regeneration Resin, stripping liquid are returned to after removal of impurities using to replace clear water in grind grading, and regenerating resin returns to conventional ore pulp and carries gold Middle use.
Embodiment three
Embodiment 3 is to handle gold ore to sift out the two of thin liquid pulp substep sections of carbon-in-pulp process, and gold-bearing material is Quartz Vein Type Gold containing ore and altered rock-type gold containing ore are formed with ore deposit, gold grade Au:5.5 g/t, flow is as shown in figure 4, successively Including grind grading, at first sieve dilute concentration, leading portion leaches, the dilute concentration of leading portion sieve, thin liquid pulp absorption and separation, conventional ore pulp carry Gold, back segment sieve dilute filter, and each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition quick lime 4kg/t, slurry pH is transferred to 11, after being classified and excluding sawdust, discharge levigate ore pulp, control The mass concentration of levigate ore pulp is 30%, and grade quality is to account for 90% less than 74 μm;
It is described at first to sieve dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, by the levigate ore deposit obtained by grind grading Slurry carries out sieving dilute concentration, and to separate the lower slurry of at first sieve and at first sieve starching, at first the lower mass concentration starched of sieve is 4% for control, at first The mass concentration for sieving starching is 45%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The leading portion leaches:At first the at first sieve starching sieved obtained by dilute concentration is stirred leaching, addition Cymag makes Its content in ore pulp is 0.8kg/t, and when the air blasted makes liquid phase oxygen content maintain 5mg/L, extraction time is for 24 hours;
The leading portion sieves dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, the ore pulp that leading portion leaching process is crossed It carries out sieving dilute concentration, sieves starching to separate the lower slurry of leading portion sieve and leading portion, the lower mass concentration starched of control leading portion sieve is 4%, leading portion sieve The mass concentration of starching is 60%;
The thin liquid pulp absorption and separation:The equipment choosing of the operation is to inflate the pachuca to stir, and to press wind Machine is inflated to pachuca, and leading portion is sieved to the lower slurry of leading portion sieve obtained by dilute concentration and adsorbs the gold leached, and divide by activated carbon Gold loaded carbon is separated out, is left the poor slurry of leading portion;It recycles to replace clear water in the poor grind grading starched before returning to of leading portion, return Add clear water in the water shortage part of slurry;
The routine ore pulp carries gold:It is 40% that leading portion is sieved to the leading portion sieve starching obtained by dilute concentration and is sized mixing to mass concentration, is used Conventional carbon-in-leach process carries gold, and the content which adds Cymag and make it in ore pulp is 0.4kg/t, when the air blasted makes liquid When phase oxygen content maintains 5mg/L, extraction time 8h selects cocoanut active charcoal, and the throwing people amount of activated carbon is 18kg/m3, through inhaling Attached back segment of isolating goes out charcoal, is left phase analysis slurry.
The back segment sieves dilute filter:The equipment choosing of the operation carries conventional ore pulp using sieve as the filter press of filter medium The phase analysis slurry of golden gained sieve dilute filter to separate the poor slurry of back segment and phase analysis filter cake, and the mass concentration of the control poor slurry of back segment is 4%, The moisture content of phase analysis filter cake is 16%;The poor grind grading starched before returning to of back segment and conventional ore pulp are carried and being recycled in the step of gold Using to replace clear water, clear water is added in the water shortage part for returning to slurry.
In order to improve the Gold grade of final gold loaded carbon, when industrial production starts, conventional ore pulp carries gold and thin liquid pulp is inhaled Conventional ore pulp is then carried the back segment that separates of gold backward and goes out charcoal and be transplanted on thin liquid pulp to inhale by attached and separating step activated carbon in zero load Attached and separating step to replace unloaded charcoal, back segment go out charcoal load gold and silver-colored saturation degree with conventional ore pulp carry gold and thin liquid pulp absorption and The working load of separation, which mutually balances, to be advisable.
The poor slurry of leading portion and the poor slurry of back segment are after recycling after a period of time, if there is foreign ion in ore pulp system Accumulation Phenomenon then drafts impurity-removing method according to the type of foreign ion, and impurity-removing method has well known technology, and removal of impurities lean solution is returned It returns and uses.
To gold loaded carbon by well known technical finesse to obtain gold, stripping liquid and regenerated carbon, stripping liquid is after removal of impurities It is carried back to ore pulp using to replace clear water in golden flow, regenerated carbon is carried in golden flow back to ore pulp and being used.
Example IV
Embodiment 4 is to handle Gold Concentrate under Normal Pressure to sift out the two of thin liquid pulp substep sections of resin in pulp process, and gold-bearing material is through floating Gold Concentrate under Normal Pressure after choosing-oxidizing roasting-acidleach removal of impurities, Chemical bath deposition Au:56g/t, Ag:80g/t, flow is such as Shown in Fig. 5, sieved successively including grind grading, at first it is dilute concentration, leading portion leach, leading portion sieve it is dilute concentration, thin liquid pulp absorption and separation, Conventional ore pulp carries gold, back segment sieves dilute filter, and each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition quick lime, dosage is advisable so that slurry pH is transferred to 10.5~11.5, after being classified and excluding sawdust, discharge Levigate ore pulp, the mass concentration for controlling levigate ore pulp are 20%, and grade quality is to account for 90% less than 45 μm;
It is described at first to sieve dilute concentration:The equipment choosing oscillatory type of the operation hangs folding sieve, by the levigate ore deposit obtained by grind grading Slurry carries out sieving dilute concentration, and to separate the lower slurry of at first sieve and at first sieve starching, at first the lower mass concentration starched of sieve is 6% for control, at first The mass concentration for sieving starching is 40%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The leading portion leaches:At first the at first sieve starching sieved obtained by dilute concentration is stirred leaching, addition Cymag makes Its content in ore pulp is 6kg/t, when the air blasted makes liquid phase oxygen content maintain 5mg/L, extraction time 48h, It is also subsidiary during leaching gold to leach part silver;
The leading portion sieves dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, the ore pulp that leading portion leaching process is crossed It carries out sieving dilute concentration, sieves starching to separate the lower slurry of leading portion sieve and leading portion, the lower mass concentration starched of control leading portion sieve is 6%, leading portion sieve The mass concentration of starching is 60%;
The thin liquid pulp absorption and separation:Leading portion is sieved to the lower slurry of the leading portion sieve obtained by dilute concentration to have been leached to adsorb by resin Jin Heyin, and isolate the golden silver resin of load, be left the poor slurry of leading portion;It is recycled in the poor grind grading starched before returning to of leading portion Using to replace clear water, clear water is added in the water shortage part for returning to slurry;
The routine ore pulp carries gold:It is 40% that leading portion is sieved to the leading portion sieve starching obtained by dilute concentration and is sized mixing to mass concentration, is used Usual resins pulp process carries gold, and the content which adds Cymag and make it in ore pulp is 1kg/t, when the air blasted makes liquid When phase oxygen content maintains 5mg/L, extraction time 12h is also subsidiary during gold is soaked to leach part silver, selects Shang Haishu The WR-16 type resins of fat factory production, the throwing people amount of resin is 6kg/m3, back segment resin is isolated after absorption, is left phase analysis slurry.
The back segment sieves dilute filter:The equipment choosing of the operation carries conventional ore pulp using sieve as the filter press of filter medium The phase analysis slurry of golden gained sieve dilute filter to separate the poor slurry of back segment and phase analysis filter cake, and the mass concentration of the control poor slurry of back segment is 6%, The moisture content of phase analysis filter cake is 20%;The poor grind grading starched before returning to of back segment and conventional ore pulp are carried and being recycled in the step of gold Using to replace clear water, clear water is added in the water shortage part for returning to slurry.
In order to improve the grade of the argentiferous containing gold of final gold loaded resin, when industrial production starts, conventional ore pulp carries golden and dilute Conventional ore pulp in zero load, is then carried the golden back segment resin separated backward and is transplanted on dilute ore deposit by the resin of pulp sorbtion and separating step To replace unloaded resin, the load gold and silver saturation degree of back segment resin carry gold with conventional ore pulp and are adsorbed with thin liquid pulp for slurry absorption and separation And the working load of separation is mutually balanced and is advisable.
Since the adsorption capacity of resin is big, selectivity is poor, foreign ion is accumulated in gold loaded resin, without accumulating on Back segment is sieved in the poor slurry of back segment obtained by dilute filter;To gold loaded resin by well known technical finesse to obtain gold, silver, stripping liquid and again Green resin, stripping liquid are returned to after removal of impurities using to replace clear water in grind grading, and regenerating resin returns to conventional ore pulp and carries It is used in gold.
Embodiment five
Embodiment 5 is processing Gold Concentrate under Normal Pressure to sift out the two of thin liquid pulp substep sections of carbon-in-pulp process, gold-bearing material be through flotation- Gold Concentrate under Normal Pressure after microbe-preoxidation gold-oxidizing slag washing, Chemical bath deposition Au:75g/t, Ag:110g/t, S:12%, Fe:14%, flow as shown in fig. 6, including grind grading, at first sieving dilute concentration, leading portion leaching, the dilute filter of leading portion sieve, dilute ore deposit successively Slurry absorption and separation, conventional ore pulp carry golden, back segment and sieve dilute filter, and each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition quick lime, dosage is advisable so that slurry pH is transferred to 10.5~11.5, after being classified and excluding sawdust, discharge Levigate ore pulp, the mass concentration for controlling levigate ore pulp are 20%, and grade quality is to account for 95% less than 45 μm;
It is described at first to sieve dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, by the levigate ore deposit obtained by grind grading Slurry carries out sieving dilute concentration, and to separate the lower slurry of at first sieve and at first sieve starching, at first the lower mass concentration starched of sieve is 6% for control, at first The mass concentration for sieving starching is 40%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The leading portion leaches:At first the at first sieve starching sieved obtained by dilute concentration is stirred leaching, addition Cymag makes Its content in ore pulp is 8kg/t, when the air blasted makes liquid phase oxygen content maintain 5mg/L, extraction time 60h, It is also subsidiary during leaching gold to leach part silver;
The leading portion sieves dilute filter:The equipment choosing of the operation is using sieve as the filter press of filter medium, at leading portion leaching The ore pulp managed carries out sieving dilute filter, and to separate the lower slurry of leading portion sieve and leading portion filter cake, the lower mass concentration starched of control leading portion sieve is 6%, The moisture content of leading portion filter cake is 20%;
The thin liquid pulp absorption and separation:The equipment choosing of the operation is to inflate the pachuca to stir, and to press wind Machine is inflated to pachuca, and leading portion is sieved to the lower slurry of the leading portion sieve obtained by dilute filter and adsorbs the Jin Heyin leached by activated carbon, and It isolates load gold and carries silver-colored charcoal, be left the poor slurry of leading portion;It is recycled in the poor grind grading starched before returning to of leading portion clear to replace Clear water is added in water, the water shortage part for returning to slurry;
The routine ore pulp carries gold:It is 40% that leading portion is sieved to the leading portion filter cake obtained by dilute filter and is sized mixing to mass concentration, with routine Carbon-in-leach process carries gold, and the content which adds Cymag and make it in ore pulp is 1.5 kg/t, when the air blasted contains liquid phase When oxygen amount maintains 5mg/L, extraction time 18h is also subsidiary during gold is soaked to leach part silver, selects coconut activated Charcoal, the throwing people amount of activated carbon is 20kg/m3, after absorption isolating back segment goes out charcoal, is left phase analysis slurry;
The back segment sieves dilute filter:The equipment choosing of the operation carries conventional ore pulp using sieve as the filter press of filter medium The phase analysis slurry of golden gained sieve dilute filter to separate the poor slurry of back segment and phase analysis filter cake, and the mass concentration of the control poor slurry of back segment is 6%, The moisture content of phase analysis filter cake is 20%;The poor grind grading starched before returning to of back segment and conventional ore pulp, which put forward cycle in golden step, to be made To replace clear water, clear water is added in the water shortage part for returning to slurry.
In order to improve the grade of the argentiferous containing gold of final gold loaded carbon, when industrial production starts, conventional ore pulp puies forward gold and dilute ore deposit The activated carbon of slurry absorption and separating step is in zero load;Conventional ore pulp then carried into the back segment that separates of gold backward go out charcoal and be transplanted on dilute ore deposit Slurry absorption and detach to replace unloaded charcoal, back segment go out charcoal load gold carry silver-colored saturation degree with conventional ore pulp carry gold and thin liquid pulp absorption and The working load of separation, which mutually balances, to be advisable.
The poor slurry of leading portion and the poor slurry of back segment are after recycling after a period of time, if there is foreign ion in ore pulp system Accumulation Phenomenon then drafts impurity-removing method according to the type of foreign ion, and impurity-removing method has well known technology, and removal of impurities lean solution is returned It returns and uses.
To gold loaded carbon by well known technical finesse to obtain gold, silver, stripping liquid and regenerated carbon, stripping liquid is through removal of impurities It is carried afterwards back to ore pulp using to replace clear water in golden flow, regenerated carbon is carried in golden flow back to ore pulp and being used.
Embodiment six
Embodiment 6 is processing Gold Concentrate under Normal Pressure to sift out the three of thin liquid pulp substep sections of carbon-in-pulp process, gold-bearing material be through flotation- Gold Concentrate under Normal Pressure after reagent removal, Chemical bath deposition Au:65 g/t, Cu:0.25%, S:30%, Fe:35%, flow such as Fig. 7 institute Show, sieved successively including grind grading, at first it is dilute concentration, leading portion leach, leading portion sieve it is dilute concentration, stage casing leach, stage casing sieve it is dilute concentration, Thin liquid pulp adsorbs and separation, conventional ore pulp carry gold, back segment sieves dilute filter, and each step is characterized in that:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, ore grinding into Expect end addition sodium hydroxide, dosage is advisable so that slurry pH is transferred to 10.5~11.5, after being classified and excluding sawdust, row Go out levigate ore pulp, the mass concentration for controlling levigate ore pulp is 18%, and grade quality is to account for 95% less than 37 μm;
It is described at first to sieve dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, by the levigate ore deposit obtained by grind grading Slurry carries out sieving dilute concentration, and to separate the lower slurry of at first sieve and at first sieve starching, at first the lower mass concentration starched of sieve is 6% for control, at first The mass concentration for sieving starching is 35%;At first the lower slurry of sieve returns to grind grading to form closed cycle;
The leading portion leaches:At first the at first sieve starching sieved obtained by dilute concentration is stirred leaching, addition Cymag makes Its content in ore pulp is 9kg/t, blasts air and adds in hydrogen peroxide, and liquid phase oxygen content is made to maintain 25mg/L, extraction time For 48h;
The leading portion sieves dilute concentration:The equipment choosing of the operation is plug-type to hang folding sieve, the ore pulp that leading portion leaching process is crossed It carries out sieving dilute concentration, sieves starching to separate the lower slurry of leading portion sieve and leading portion, the lower mass concentration starched of control leading portion sieve is 6%, leading portion sieve The mass concentration of starching is 60%;
It leaches in the stage casing:It is 42%, and carry out that leading portion is sieved to the leading portion sieve starching obtained by dilute concentration and is sized mixing to mass concentration Leaching, the content which adds Cymag and make it in ore pulp is 3kg/t, blasts air and adds in hydrogen peroxide, makes liquid Phase oxygen content maintains 20mg/L, extraction time 16h;
Sieve dilute concentration in the stage casing:The equipment choosing of the operation is plug-type to hang folding sieve, the ore pulp that stage casing leaching process is crossed It carries out sieving dilute concentration, sieves starching to separate the lower slurry of stage casing sieve and stage casing, the sieve lower mass concentration starched in control stage casing is 6%, stage casing sieve The mass concentration of starching is 60%;
The thin liquid pulp absorption and separation:The equipment choosing of the operation is to inflate the pachuca to stir, and to press wind Machine is inflated to pachuca, stage casing is sieved under the leading portion that slurry is sieved with leading portion obtained by dilute concentration under the stage casing obtained by dilute concentration is sieved sieves and starched Converge, the gold leached is adsorbed, and isolate gold loaded carbon by activated carbon, be left the preceding poor slurry in stage casing;The preceding poor slurry in stage casing returns to It is recycled in grind grading before to replace clear water, clear water is added in the water shortage part for returning to slurry;
The routine ore pulp carries gold:It is 42% that stage casing is sieved to the stage casing sieve starching obtained by dilute concentration and is sized mixing to mass concentration, is used Conventional carbon-in-leach process carries gold, and the content which adds Cymag and make it in ore pulp is 1.5 kg/t, blasts air and adds in double Oxygen water makes liquid phase oxygen content maintain 12mg/L, extraction time 8h, selects cocoanut active charcoal, the throwing people amount of activated carbon is 20kg/ m3, after absorption isolating back segment goes out charcoal, is left phase analysis slurry;
The back segment sieves dilute filter:The equipment choosing of the operation carries conventional ore pulp using sieve as the filter press of filter medium The phase analysis slurry of golden gained sieve dilute filter to separate the poor slurry of back segment and phase analysis filter cake, and the mass concentration of the control poor slurry of back segment is 6%, The moisture content of phase analysis filter cake is 20%;Grind grading, stage casing leaching and conventional ore pulp before the poor slurry of back segment returns to put forward golden step It is recycled in rapid to replace clear water, clear water is added in the water shortage part for returning to slurry.
In order to improve the Gold grade of final gold loaded carbon, when industrial production starts, conventional ore pulp carries gold and thin liquid pulp is inhaled Attached and separating step activated carbon is in zero load;Conventional ore pulp then is carried the back segment that separates of gold backward to go out charcoal and be transplanted on thin liquid pulp to inhale To replace unloaded charcoal, the golden saturation degree of load that back segment goes out charcoal carries gold and thin liquid pulp absorption and the work detached with conventional ore pulp for attached and separation Industry load, which mutually balances, to be advisable.
The poor slurry in preceding stage casing and the poor slurry of back segment after recycling after a period of time, if occur in ore pulp system impurity from Sub- Accumulation Phenomenon then drafts impurity-removing method according to the type of foreign ion, and impurity-removing method has well known technology, and clean lean solution It returns and uses.
To gold loaded carbon by well known technical finesse to obtain gold, copper, stripping liquid and regenerated carbon, stripping liquid is through removal of impurities It is carried afterwards back to ore pulp using to replace clear water in golden flow, regenerated carbon is carried in golden flow back to ore pulp and being used.
Above example is only to the present invention is described in detail, the technical solution that is not intended to limit the present invention, although ginseng According to above-described embodiment, those skilled in the art should be understood to:It is still possible to modify or equivalently replace the present invention, Without departing from the spirit or scope of the invention, or any substitutions, the claim model in the present invention should all be covered In enclosing.

Claims (14)

1. carry out the ore pulp extraction of gold process of substep in a manner of sifting out thin liquid pulp, which is characterized in that successively including grind grading, at first Sieve dilute concentration, leading portion leaches, the dilute concentration of leading portion sieve or sieves dilute filter, thin liquid pulp absorption and separation, conventional ore pulp and carries gold, wherein:
The grind grading:Gold-bearing material is fed and is sized mixing in grind grading circuit and ore grinding, in the feed end of ore grinding Addition protection alkali, after being classified and excluding sawdust, discharges levigate ore pulp;
It is described at first to sieve dilute concentration:Levigate ore pulp obtained by grind grading is carried out sieving dilute concentration, with separate the lower slurry of at first sieve and At first starching is sieved, at first the lower mass concentration starched of sieve is 3%~6% for control, and the mass concentration at first sieving starching is 35%~45%;It rises First the lower slurry of sieve returns to grind grading to form closed cycle;
The leading portion leaches:At first the at first sieve starching sieved obtained by dilute concentration is stirred leaching;
The leading portion sieve is dilute to concentrate or sieves dilute filter:The ore pulp that leading portion leaching process is crossed carries out sieving dilute concentration or sieves dilute filter, with sieve Go out the lower slurry of leading portion sieve, the lower mass concentration starched of control leading portion sieve is 3%~6%;For sieving dilute concentration, it is leading portion sieve to stay on sieve Starching, the mass concentration of control leading portion sieve starching is 55%~65%;For sieving dilute filter, it is leading portion filter cake to stay on sieve, control The moisture content of leading portion filter cake is 15%~20%;
The thin liquid pulp absorption and separation:Slurry under sieve obtained by step before is adsorbed into the gold leached by activated carbon or resin Or silver, and gold loaded carbon or gold loaded resin are isolated, it is left the poor slurry of leading portion;It is followed in the poor grind grading starched before returning to of leading portion For ring using to replace clear water, clear water is added in the water shortage part for returning to slurry;
The routine ore pulp carries gold:It is 35%~45% that sieve starching obtained by step before or filter cake, which are sized mixing to mass concentration, is used Conventional carbon-in-leach process or resin in pulp process carries gold, and back segment is isolated after absorption and goes out charcoal or back segment resin, is left phase analysis slurry.
2. the ore pulp extraction of gold process according to claim 1 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that: The dilute concentration of leading portion sieve sieves dilute filter progress stage casing leaching later, the dilute concentration of stage casing sieve or sieves dilute filter, then carries out thin liquid pulp suction again Attached and separation, conventional ore pulp carry gold, wherein:
It leaches in the stage casing:By leading portion sieve it is dilute concentration or sieve obtained by dilute filter leading portion sieve starching or leading portion filter cake size mixing it is dense to quality Spend is 35%~45%, and carry out leaching;
The stage casing sieve is dilute to concentrate or sieves dilute filter:The ore pulp that stage casing leaching process is crossed carries out sieving dilute concentration or sieves dilute filter, with sieve Go out the lower slurry of stage casing sieve, the control stage casing lower mass concentration starched of sieve is 3%~6%;For sieving dilute concentration, it is stage casing sieve to stay on sieve Starching, the mass concentration of control stage casing sieve starching is 55%~65%;For sieving dilute filter, it is stage casing filter cake to stay on sieve, control The moisture content of stage casing filter cake is 15%~20%;
The thin liquid pulp absorption and separation:The lower slurry of stage casing sieve that stage casing is sieved dilute concentration or sieved obtained by dilute filter is sieved into dilute concentration with leading portion Or the lower slurry of leading portion sieve obtained by the dilute filter of sieve converges, and thin liquid pulp absorption and separation is carried out, to be left the preceding poor slurry in stage casing;The preceding poor slurry in stage casing It is recycled back in grind grading before to replace clear water, clear water is added in the water shortage part for returning to slurry;
The routine ore pulp carries gold:Dilute concentration is sieved into stage casing or sieves stage casing sieve starching or stage casing filter cake obtained by dilute filter, size mixing to Mass concentration is 35%~45%, and gold is carried with conventional carbon-in-leach process or resin in pulp process, isolated after absorption back segment go out charcoal or after Section resin is left phase analysis slurry.
3. the ore pulp extraction of gold process according to claim 1 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that:Also Dilute filter is sieved including back segment, conventional ore pulp is proposed into the phase analysis slurry dilute filter of progress back segment sieve obtained by gold to separate the poor slurry of back segment and phase analysis filter Cake, the mass concentration of the control poor slurry of back segment is 3%~6%, and the moisture content of phase analysis filter cake is 15%~20%, and the poor slurry of back segment returns to it Preceding grind grading and conventional ore pulp, which carry, to be recycled in the step of gold to replace clear water, and the water shortage part for returning to slurry is added Clear water.
4. the ore pulp extraction of gold process according to claim 2 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that:Also Dilute filter is sieved including back segment, conventional ore pulp is proposed into the phase analysis slurry dilute filter of progress back segment sieve obtained by gold to separate the poor slurry of back segment and phase analysis filter Cake, the mass concentration of the control poor slurry of back segment is 3%~6%, and the moisture content of phase analysis filter cake is 15%~20%, and the poor slurry of back segment returns to it Preceding grind grading, stage casing leaching and conventional ore pulp, which carries, to be recycled to replace clear water in the step of gold, returns to the water of slurry not Foot point adds clear water.
5. the ore pulp extraction of gold process according to claim 1 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that:Institute The gold-bearing material for stating grind grading step is the gold ore of broken mistake, and the mass concentration for controlling levigate ore pulp is 20%~35%, grain Grade quality is to account for 85%~95% less than 74 μm.
6. according to claim 1 ~ 2 any one in a manner of sifting out thin liquid pulp come the ore pulp extraction of gold process of substep, It is characterized in that:The gold-bearing material of the grind grading step is Gold Concentrate under Normal Pressure, and the mass concentration for controlling levigate ore pulp is 15%~25%, Its grade quality is to account for 95% less than 37 μm.
7. according to claim 1 ~ 2 any one in a manner of sifting out thin liquid pulp come the ore pulp extraction of gold process of substep, It is characterized in that:The leading portion sieves the equipment choosing of dilute filter using sieve as the filter press of filter medium.
8. the ore pulp extraction of gold process according to claim 2 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that:Institute It states stage casing and sieves filter press of the equipment choosing of dilute filter using sieve as filter medium.
9. according to claim 3 ~ 4 any one in a manner of sifting out thin liquid pulp come the ore pulp extraction of gold process of substep, It is characterized in that:The back segment sieves the equipment choosing of dilute filter using sieve as the filter press of filter medium.
10. the ore pulp extraction of gold process according to claim 1 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that: The activated carbon input amount that the routine ore pulp carries gold is 10~30kg/m3, by unit ore pulp volumeter.
11. according to claim 1 ~ 2 any one in a manner of sifting out thin liquid pulp come the ore pulp extraction of gold process of substep, It is characterized in that:The input amount that the routine ore pulp carries activated carbon used in carbon-in-leach process in gold is 10~30kg/m3, opened in industrial production During the beginning, conventional ore pulp carries gold and the activated carbon of thin liquid pulp absorption and separating step in zero load, and conventional ore pulp then is carried gold backward The back segment separated goes out charcoal and is transplanted on thin liquid pulp absorption and detaches to replace unloaded charcoal, and back segment goes out the load gold of charcoal or carries gold and silver saturation degree Being carried gold with conventional ore pulp and mutually balanced with thin liquid pulp absorption and the working load detached is advisable.
12. the ore pulp extraction of gold process according to claim 1 for carrying out substep in a manner of sifting out thin liquid pulp, it is characterised in that: The resin input amount that the routine ore pulp carries gold is 3~9kg/m3
13. according to claim 1 ~ 2 any one in a manner of sifting out thin liquid pulp come the ore pulp extraction of gold process of substep, It is characterized in that:The input amount that the routine ore pulp carries golden resin is 3~9kg/m3, when industrial production starts, conventional ore pulp carries Gold and the resin of thin liquid pulp absorption and separating step are in zero load;Conventional ore pulp then is carried the golden back segment resin separated backward to transfer Adsorb and detach to replace unloaded resin to thin liquid pulp, the load gold of back segment resin or carry gold and silver saturation degree with conventional ore pulp carry gold with The working load that thin liquid pulp is adsorbed and detached, which mutually balances, to be advisable.
14. according to claim 1,2 any one in a manner of sifting out thin liquid pulp come the ore pulp extraction of gold process of substep, It is characterized in that:When selection activated carbon is come when adsorbing, the equipment choosing of the thin liquid pulp absorption and separation is to inflate the pa to stir Mound card slot, and inflated with pressure fan to pachuca.
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