CN105381867B - A kind of method for floating of aphanitic graphite - Google Patents

A kind of method for floating of aphanitic graphite Download PDF

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CN105381867B
CN105381867B CN201510971039.2A CN201510971039A CN105381867B CN 105381867 B CN105381867 B CN 105381867B CN 201510971039 A CN201510971039 A CN 201510971039A CN 105381867 B CN105381867 B CN 105381867B
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ore
graphite
sections
mixing
floating
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CN105381867A (en
Inventor
谢广元
皇甫京华
金明国
倪超
卜祥宁
王伟
贺文振
刘鹏举
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/018—Mixtures of inorganic and organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/005—Dispersants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/04—Frothers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores

Abstract

The invention discloses a kind of method for floating of aphanitic graphite, including grinding operation, two sections of size mixing operation and flotation operations.Graphite raw ore is fed into ore mill first, the product after ore grinding adds water to be configured to the ore pulp of mass percent concentration 10%~50%；Then ore pulp is fed into one section of turbulent size mixing equipment of height and be stirred and sized mixing；Complete one section of ore pulp sized mixing and feed two sections of size mixing equipments again, and it is 5%~10% to be diluted with water to mass percent concentration in two sections of size mixing equipments, then adds PH regulators, dispersant, collecting agent and foaming agent in ore pulp successively；Two sections of ore pulps sized mixing of completion feed roughing separation equipment and sorted, and rougher concentration obtains final concentrate after multistage is selected, and rougher tailings obtains true tailings after multistage is scanned.High turbulent flow is sized mixing and is combined with method for floating by this method, realizes the high accuracy sorting to aphanitic graphite, solves aphanitic graphite efficient separation problem.

Description

A kind of method for floating of aphanitic graphite
Technical field
The present invention relates to a kind of method for separating of graphite, especially a kind of efficient flotation separation side suitable for aphanitic graphite Method.
Background technology
Graphite is due to many particularity such as high temperature resistant, corrosion-resistant, anti-thermal shock and good conduction, heat conduction, lubricity Can, turn into the indispensable conduction of the departments such as metallurgy, machinery, oil, chemical industry, nuclear industry, national defence sophisticated technology, fire resisting, lubrication, Encapsulant and structural material.China is native graphite resource big country, and reserves, yield and export volume occupy first place in the world, but I State's graphite industry aggregate level is in the world still in medium level.
According to the difference of graphite crystallization degree, Scaly graphite and the class of aphanitic graphite two, wherein aphanitic graphite can be divided into Grain size number is extremely fine, typically smaller than 1 μm, and the fine and close combination of the gangue such as normal and kaolin, illite, chlorite, its Washability extreme difference, most domestic enterprise cause the serious waste of resource also in raw ore state is directly utilized.
Flotation is that graphite sorts most important method.However, the ore dressing means such as existing ore grinding and flotation are difficult to effectively divide Aphanitic graphite is selected, produces high-grade graphite concentrate.Therefore, there are concentrate product in existing floatation process processing aphanitic graphite The problems such as position is not up to standard, follow-up link production pressure is big, production cost increase, does not only result in the wasting of resources, seriously restricts enterprise Economic benefit.
The content of the invention
The invention aims to overcome existing graphite method for separating processing aphanitic graphite to exist, concentrate grade is low, provides Source wastes the problem of serious, there is provided a kind of cost is low, small investment, rational technology, the efficiency of separation are high, the cryptocrystal of remarkable in economical benefits The method for floating of matter graphite.
To achieve the above object, the method for floating of aphanitic graphite of the invention, including：Ore grinding → mono- section is high, and turbulent flow is sized mixing → bis- sections of → flotation of sizing mixing；Comprise the following steps that：
A. graphite raw ore is fed into ore mill, the product after ore grinding adds water to be configured to mass percent concentration 10%~50% Ore pulp；Then ore pulp is fed into one section of turbulent size mixing equipment of height and be stirred and sized mixing；
B. complete one section of ore pulp sized mixing and feed two sections of size mixing equipments again, and matter is diluted with water in two sections of size mixing equipments It is 5%~10% to measure percent concentration, and PH regulators, dispersant, collecting agent and foaming agent are then sequentially added in ore pulp；
C. two sections of ore pulps sized mixing of completion feed roughing separation equipment and sorted, and rougher concentration obtains finally after multistage is selected Concentrate, rougher tailings obtain true tailings after multistage is scanned.
Described PH regulators are preferably sulfuric acid and soda.
Described dispersant is preferably sodium metasilicate, and dosage is preferably 1.0~10.0kg/t, i.e. 1t graphite dry sample addition 1.0 ~10.0kg sodium metasilicate.
Described collecting agent is preferably kerosene, and dosage is 1~60kg/t, i.e. 1t graphite dry sample addition 1~60kg/t kerosene.
Described foaming agent is preferably sec-octyl alcohol, and its dosage is 100~1000g/t, i.e., 1t graphite dry sample addition 100~ 1000g sec-octyl alcohols.
Beneficial effect：By adopting the above-described technical solution, the technological process of the present invention is reasonable, operating cost is low, investment Less, rational technology, efficiency of separation height, remarkable in economical benefits, it can be achieved to sort the high accuracy of aphanitic graphite, substantially increase The comprehensive concentrate rate of recovery.Has advantages below compared with prior art：
(1) be directed to aphanitic graphite the embedding cloth feature of mineral composition, by depth ore grinding realize valuable mineral (graphite) with Effective dissociation of impure mineral, to realize that sorting provides prerequisite to aphanitic graphite in high precision.
(2) two sections of size mixing technologies improve the dispersion effect of particle, medicament, effectively reduce impure mineral pair in floatation process The pollution of graphite concentrate；The interaction of medicament and particle is enhanced simultaneously, improves the utilization ratio of medicament, reduces medicine consumption And reagent cost.
(3) size mixing technology and flotation technology of high turbulent flow is organically combined, realizes the high accuracy sorting to aphanitic graphite.It is micro- In fine mineral floatation process, target minreal easily coalesced with non-target minreal it is agglomerating, influence sorting selectivity.This is also fine Main bugbear present in grain graphite mineral floatation process.High turbulent flow sizes mixing technology by ore pulp input energy, overcoming fine Energy barrier between grain graphite and impure mineral particle, break the floc sedimentation formed between graphite and impure mineral particle, reduce impurity Pollution of the mineral grain to graphite concentrate, the grade of graphite and the selectivity of sorting are improved, so as to realize to aphanitic graphite High accuracy sorting.
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Embodiment
The method for floating of the aphanitic graphite of the present invention：Including：The high turbulent flow of ore grinding → mono- section is sized mixing → bis- sections and sizes mixing → float Choosing；Comprise the following steps that：
A. graphite raw ore is fed into ore mill, the product after ore grinding adds water to be configured to mass percent concentration 10%~50% Ore pulp；Then ore pulp is fed into one section of turbulent size mixing equipment of height and be stirred and sized mixing；
B. complete one section of ore pulp sized mixing and feed two sections of size mixing equipments again, and matter is diluted with water in two sections of size mixing equipments It is 5%~10% to measure percent concentration, and PH regulators, dispersant, collecting agent and foaming agent, PH are then sequentially added in ore pulp Regulator is used for the pH value for adjusting ore pulp, and the effect of dispersant is to realize the scattered of ore pulp, graphite is separated with impure mineral； The effect of collecting agent is that coal separation improves the hydrophobicity of graphite surface；, foaming agent effect be promote bubble generation, prevent The merger of bubble, improve the stability of bubble；
C. two sections of ore pulps sized mixing of completion feed roughing separation equipment and sorted, and rougher concentration obtains finally after multistage is selected Concentrate, rougher tailings obtain true tailings after multistage is scanned.
Described PH regulators are preferably sulfuric acid and soda.
Described dispersant is preferably sodium metasilicate, and dosage is preferably 1.0~10.0kg/t, i.e. 1t graphite dry sample addition 1.0 ~10.0kg sodium metasilicate.
Described collecting agent is preferably kerosene, and dosage is 1~60kg/t, i.e. 1t graphite dry sample addition 1~60kg/t kerosene.
Described foaming agent is preferably sec-octyl alcohol, and its dosage is 100~1000g/t, i.e., 1t graphite dry sample addition 100~ 1000g sec-octyl alcohols.
Embodiment 1：Be 2.32 μm using mog, the aphanitic graphite raw ore of grade 86.20% be used as floatation feed, general It adds water to be configured to the ore pulp of mass percent concentration 10%, carries out one section of high turbulent flow and sizes mixing, size mixing time 10min；Complete one The ore pulp that section is sized mixing carries out two sections and sized mixing, and it is 5% to be diluted with water to mass percent concentration, is then sequentially added in ore pulp Sodium acid carbonate adjustment pulp PH value is 8.5, dispersant sodium metasilicate 1.5kg/t, collecting agent kerosene 50kg/t, foaming agent sec-octyl alcohol 360g/t, size mixing time 1min.Two sections of ore pulps sized mixing of completion feed roughing separation equipment and sorted, and the concentrate of roughing carries out 1 again Secondary selected operation, refining process do not add medicament, and the mine tailing and cleaner tailings of roughing are collectively as true tailings.It can finally obtain The graphite concentrate of grade 93.33%, yield 89.26%, the mine tailing of grade 26.91%.
Embodiment 2：Be 1.05 μm using mog, the aphanitic graphite raw ore of grade 86.94% be used as floatation feed, general It adds water to be configured to the ore pulp of mass percent concentration 10%, carries out one section of high turbulent flow and sizes mixing, size mixing time 10min；Complete one The ore pulp that section is sized mixing carries out two sections and sized mixing, and it is 5% to be diluted with water to mass percent concentration, is then sequentially added in ore pulp Sodium carbonate adjustment pulp PH value is 9.0, dispersant sodium metasilicate, 2kg/t, collecting agent kerosene 30kg/t, foaming agent sec-octyl alcohol 500g/ T, size mixing time 1min.Two sections of ore pulps sized mixing are completed to feed roughing separation equipment and sorted, the concentrate of roughing carry out again 2 times it is selected Operation, refining process do not add medicament, and the mine tailing and cleaner tailings of roughing are collectively as true tailings.Grade can finally be obtained 95.38%th, the graphite concentrate of yield 85.97%, the mine tailing of grade 35.23%.
The flow of above-mentioned technical proposal is：Grinding operation, one section of high turbulent flow size mixing operation, two sections size mixing operation and multistage floats It is elected to be industry.
The present invention by one section of high turbulent flow of graphite is sized mixing sized mixing with two sections after carry out roughing, the low ash of acquisition of maximum possible Divide, the graphite of high-recovery.Then graphite quality is further improved by multiple dressing process, repeatedly scans technique and further carry High recycling graphite rate.By sorting aphanitic graphite, can both guarantee the quality, again can the amount of guarantor, well solve aphanitic graphite it is high-precision Degree sorting problem.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (5)

  1. A kind of 1. method for floating of aphanitic graphite, it is characterised in that：It includes：The high turbulent flow of ore grinding → mono- section is sized mixing → bis- sections of tune Slurry → flotation；Comprise the following steps that：
    A. graphite raw ore is fed into ore mill, the product after ore grinding adds water to be configured to the ore pulp of mass percent concentration 10% ~ 50%； Then ore pulp is fed into one section of turbulent size mixing equipment of height and be stirred and sized mixing；
    B. complete one section of ore pulp sized mixing and feed two sections of size mixing equipments again, and quality hundred is diluted with water in two sections of size mixing equipments It is 5% ~ 10% to divide specific concentration, and PH regulators, dispersant, collecting agent and foaming agent are then sequentially added in ore pulp；
    C. two sections of ore pulps sized mixing of completion feed roughing separation equipment and sorted, and rougher concentration obtains final essence after multistage is selected Ore deposit, rougher tailings obtain true tailings after multistage is scanned.
  2. A kind of 2. method for floating of aphanitic graphite according to claim 1, it is characterised in that：Described PH regulators are Sulfuric acid and soda.
  3. A kind of 3. method for floating of aphanitic graphite according to claim 1, it is characterised in that：Described dispersant is silicon Sour sodium, dosage are 1.0 ~ 10.0 kg/t, i.e. 1 t graphite dry sample adds 1.0 ~ 10.0 kg sodium metasilicate.
  4. A kind of 4. method for floating of aphanitic graphite according to claim 1, it is characterised in that：Described collecting agent is coal Oil, dosage are 1 ~ 60 kg/t, i.e. 1 t graphite dry sample adds 1 ~ 60 kg/t kerosene.
  5. A kind of 5. method for floating of aphanitic graphite according to claim 1, it is characterised in that：Described foaming agent is secondary Octanol, its dosage are 100 ~ 1000 g/t, i.e., 1t graphite dry sample adds 100 ~ 1000 g sec-octyl alcohols.
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Publication number Priority date Publication date Assignee Title
CN106423532B (en) * 2016-09-30 2018-09-18 中国矿业大学 A method of FLOTATION SEPARATION, recycling graphite and silicon from the graphite components that silicon wafer production process is discarded
CN107930839B (en) * 2017-11-24 2020-12-29 中国矿业大学 Gravity separation-flotation combined separation method for graphite and silicon
CN109604067B (en) * 2017-12-05 2021-01-19 湖南有色金属研究院 Separation method of graphite and mica
CN109054464B (en) * 2018-08-20 2020-11-06 西安科技大学 Physical deashing process for tire cracking carbon black
CN110371967A (en) * 2019-07-26 2019-10-25 苏州中材非金属矿工业设计研究院有限公司 A kind of graphite flakes low-quality low concentration protection extraction process

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Publication number Priority date Publication date Assignee Title
US4213942A (en) * 1978-01-23 1980-07-22 Groupe Minier Sullivan Ltee/Sullivan Mining Group Ltd. Process for the concentration of mineral by flotation process
CN102649100A (en) * 2012-04-21 2012-08-29 山东莱芜煤矿机械有限公司 Equipment combination for fine flake graphite flotation technology
CN102773152B (en) * 2012-07-13 2013-09-25 四川领航石墨制品有限公司 Fine flaky-cryptocrystalline mixed graphite separation technique
CN102861661B (en) * 2012-09-24 2014-08-27 湛江市聚鑫新能源有限公司 Beneficiation method and beneficiation equipment system for graphite ores
CN204544406U (en) * 2014-12-29 2015-08-12 山东东山王楼煤矿有限公司 For the flotation unit of coal slime

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