CN212370375U - Copper sulfide lead-zinc ore processing system - Google Patents
Copper sulfide lead-zinc ore processing system Download PDFInfo
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- CN212370375U CN212370375U CN202020332836.2U CN202020332836U CN212370375U CN 212370375 U CN212370375 U CN 212370375U CN 202020332836 U CN202020332836 U CN 202020332836U CN 212370375 U CN212370375 U CN 212370375U
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Abstract
The utility model belongs to the field of ore dressing, in particular to a copper-lead-zinc sulfide ore treatment system, aiming at copper-lead-zinc sulfide ore to be separated by flotation, the obtained ore pulp is introduced into a flotation machine to carry out copper-lead mixed flotation through an ore grinding system, and the copper-lead mixed rough concentrate and two-time scavenging are obtained through one-time rough concentration and two-time scavenging; introducing the ore pulp into a flotation machine for zinc sulfide flotation, performing primary roughing, tertiary concentration and twice scavenging, introducing the copper-lead coarse concentrate ore pulp into the flotation machine for copper-lead mixed concentration, and performing tertiary mixed concentration totally; and feeding the ore pulp into a copper-lead separation flotation machine for separation, and performing primary roughing, tertiary fine separation and twice scavenging in the process to finally obtain copper sulfide concentrate and lead sulfide concentrate. The utility model provides a can effectively improve the metal recovery rate, reduction in production cost, improve adaptability, the reduction environmental pollution's of different nature ore copper sulphide lead-zinc ore processing system.
Description
Technical Field
The utility model belongs to the ore dressing field, concretely relates to copper sulphide lead zinc ore processing system.
Background
Mineral separation is to process raw ore extracted from mine, enrich useful minerals and discard useless gangue, the enriched useful minerals are called concentrate for smelting metal, and the gangue is discarded as tailings. The flotation is a mineral separation method for sorting according to the difference of the floatability of minerals according to the difference of the physicochemical properties of the surfaces of the mineral particles, and the physicochemical characteristics of the surfaces of various mineral particles and a flotation medium are adjusted by using various reagents so as to enlarge the difference of hydrophobicity-hydrophilicity (namely floatability) among various minerals and improve the flotation efficiency. The flotation process of the ore comprises three operations of ore pulp preparation, chemical regulation and aeration flotation, wherein the ore pulp preparation comprises ore grinding, classification and size mixing (aiming at obtaining particles with required granularity and ore pulp with proper concentration). In practical application, the flotation of the ore pulp is a continuous process and comprises a plurality of flotation machines, the flotation machines are divided into a plurality of cycles according to ore characteristics, and each cycle comprises 1-2 rough concentration and a plurality of fine concentration and scavenging operations. The flotation effect of the ore is determined by the flotation characteristics of the ore, the configuration flow of equipment and the flotation reagent system. So far, copper-lead-zinc sulfide ore is one of ores difficult to separate, and most of domestic flotation process technologies for the copper-lead-zinc sulfide ore comprise the steps of carrying out copper-lead mixed flotation, then carrying out zinc flotation, and then carrying out copper-lead mixed concentrate flotation separation. The copper, lead and zinc sulfide minerals in the ores are usually compact and symbiotic, have fine embedded granularity and are uneven to form various structures, so that monomer dissociation is difficult to achieve in ore grinding, the flotation effect is influenced, meanwhile, secondary copper minerals are often generated, copper ions are easy to generate in the ore grinding process to cause activation of zinc sulfide, and as a result, zinc sulfide inhibition is difficult in the copper-lead mixed flotation process due to zinc sulfide inhibition, and the zinc sulfide is mixed in the copper-lead mixed concentrate to reduce the quality of the copper-lead mixed concentrate, so that the copper-lead mixed concentrate is difficult to float and separate, and the zinc recovery rate is reduced; when zinc is floated in copper-lead mixed flotation tailings, a commonly used collecting agent is butyl xanthate, the collecting capacity of the agent is strong, the selectivity is poor, when return water is recycled, the copper-lead and zinc are difficult to float and separate, and the recycle of the return water is also difficult; in the copper-lead mixed flotation process, a large amount of flotation reagents remain on the surface of copper-lead mixed concentrate and in an ore pulp solution and need to be removed during flotation separation, in a common reagent removing method, sodium sulfide can desorb the reagents adsorbed on the surface of minerals, so that the reagents exist in the solution and are concentrated and filtered to remove the residual sodium sulfide and other reagents, but the consumption of sodium sulfide is large, and the required reagent removing equipment is more, so that the subsequent process is continuous and difficult, and activated carbon can adsorb the excess reagents in the ore pulp but cannot desorb the reagents on the surface of the minerals, so that the reagent removing is not thorough; the copper-lead flotation separation has two schemes of copper inhibition and lead flotation and lead inhibition and copper flotation, the common inhibitor of the copper inhibition and lead flotation scheme is cyanide, and the common inhibitor of the lead inhibition and copper flotation scheme is dichromate, and the agents have high toxicity and great environmental pollution, and are forbidden to be used in the field of nonferrous metal sulfide ore flotation at present. At present, a great amount of cyanide-free and chromium-free copper-lead separation medicaments and process researches are carried out by many scientific researchers, but the flotation separation effect with strong adaptability is difficult to obtain only from the research of inhibitors. Therefore, for the copper-lead-zinc sulfide ore, the search for a scientific and effective treatment method is the key for solving the existing problems.
To prior art's shortcoming, the utility model discloses the technical problem who solves has:
(1) the copper, lead and zinc sulfide minerals are usually in compact symbiosis, and have fine and uneven embedded particle sizes, so that monomer dissociation is difficult to achieve in ore grinding, and the ore grinding process is unreasonable, so that the particle size characteristics of ore grinding products are poor, and the separation index is influenced;
(2) because the types of copper minerals in the ores are more, secondary copper minerals are often contained in addition to primary copper minerals, copper ions are easily generated in the ore grinding process to activate zinc sulfide, and consequently, the zinc minerals are difficult to inhibit in the copper-lead mixed flotation process, and the zinc minerals are mixed in the copper-lead mixed concentrate in the flotation process, so that the quality of the copper-lead mixed concentrate is reduced, the separation of the copper-lead concentrate is difficult, and the recovery rate of zinc is reduced.
(3) Copper-lead minerals are easy to float and have similar floatability, and when the copper-lead minerals are subjected to mixed flotation, if the using amount of the collecting agent is large or the collecting agent has low selectivity to the copper-lead minerals, the difficulty in subsequent copper-lead separation can be increased as a result.
(4) In the prior art, a collecting agent commonly used for zinc flotation is butyl xanthate, the collecting capacity of the butyl xanthate is strong, the selectivity is poor, when the return water returns to the total flow, zinc is difficult to inhibit when zinc is inhibited by copper-lead mixed separation, and the separation difficulty of copper and lead is increased, so that the mineral separation index is influenced.
(5) The copper-lead bulk concentrate section reagent removing process is unreasonable, so that the reagent removing effect is poor, the controllability is poor and the reagent removing cost is high;
(6) in the process of copper-lead flotation separation, no matter the scheme of copper inhibition by flotation or copper inhibition by flotation is adopted, the existing copper or lead inhibitor has poor inhibition effect and influences flotation indexes, and a copper inhibitor (cyanide) and a lead inhibitor (dichromate) are highly toxic substances and pollute the environment, so the existing nonferrous metal sulfide ore flotation field is forbidden to use.
SUMMERY OF THE UTILITY MODEL
The method solves the problems of low metal recovery rate in the concentrate, high production cost, poor adaptability to different ores, high toxicity of copper-lead inhibitors and environmental pollution in the existing copper-lead-zinc sulfide flotation process, and can effectively improve the metal recovery rate, reduce the production cost, improve the adaptability to ores with different properties and reduce the environmental pollution.
The specific technical scheme is as follows: a copper sulfide lead-zinc ore treatment system is characterized in that a powder bin is connected with a ball mill I through a conveyor belt, the ball mill I, a pump pool I, an ore pulp pump I and a hydraulic cyclone are sequentially connected in series, the lower end of the hydraulic cyclone is connected with a pump pool II through a ball mill II, and the upper end of the hydraulic cyclone is sequentially connected with a 1# stirring barrel, a 2# stirring barrel, a copper-lead roughing machine, a copper-lead scavenging machine I, a copper-lead scavenging machine II, a 3# stirring barrel, a 4# stirring barrel, a zinc roughing machine, a zinc scavenging machine I and a zinc scavenging machine II in series; the concentrate outlet of the copper-lead scavenging machine II is connected with the copper-lead scavenging machine I, and the concentrate outlet of the copper-lead scavenging machine I is connected with the copper-lead roughing machine; the concentrate outlet of the zinc scavenging machine II is connected with the zinc scavenging machine I; a concentrate outlet of the zinc scavenging machine is connected with a zinc roughing machine;
the concentrate outlet of the zinc roughing machine is connected with a first zinc concentrating machine in the zinc concentrating system; the zinc concentration machine III, the zinc concentration machine II and the tailings outlet of the zinc concentration machine I are sequentially connected in series, the tailings outlet of the zinc concentration machine I is connected with the zinc roughing machine, the concentrate outlet of the zinc concentration machine I is connected with the zinc concentration machine II, the concentrate outlet of the zinc concentration machine II is connected with the zinc concentration machine III, and the concentrate outlet of the zinc concentration machine III is zinc sulfide concentrate; the concentrate outlet of the copper-lead roughing separator is sequentially connected with a pump pool III, an ore pulp pump II, a ball mill III, a No. 5 stirring barrel, a No. 6 stirring barrel and a copper-lead cleaning machine in series, the tailing outlet of the copper-lead cleaning machine I is connected with the copper-lead roughing separator, and the tailing outlet of the copper-lead roughing separator is connected with the copper-lead scavenging machine; the copper-lead concentration machine III, the copper-lead concentration machine II and the copper-lead concentration machine I are sequentially connected in series through a tailing outlet, a concentrate outlet of the copper-lead concentration machine I is connected with the copper-lead concentration machine II, and a concentrate outlet of the copper-lead concentration machine II is connected with the copper-lead concentration machine III; the three concentrate outlets of the copper-lead concentration machine are sequentially connected with the thickener, the 7# stirring barrel, the 8# stirring barrel, the 9# stirring barrel, the 10# stirring barrel, the 11# stirring barrel and the lead roughing machine in series; the lead concentration machine III, the lead concentration machine II, the lead concentration machine I, the lead roughing machine, the lead scavenging machine I and the lead scavenging machine II are sequentially connected in series through tailing outlets, and the tailing outlets of the lead scavenging machine II are copper sulfide concentrates; and a concentrate outlet of the lead scavenging machine II is connected with the lead scavenging machine I, a concentrate outlet of the lead scavenging machine I is connected with the lead roughing machine, a concentrate outlet of the lead roughing machine is connected with the lead dressing machine I, a concentrate outlet of the lead dressing machine I is connected with the lead dressing machine II, a concentrate outlet of the lead dressing machine II is connected with the lead dressing machine III, and a concentrate outlet of the lead dressing machine III is lead sulfide concentrate.
(1) Aiming at copper sulfide, lead and zinc sulfide ores to be subjected to flotation separation, grinding the copper sulfide, lead and zinc sulfide ores to the granularity of less than 0.074mm and up to 85% under the condition of ore grinding concentration of 70% -75% through an ore grinding system, then adjusting the concentration of ore pulp to 28% -35%, and adding 1000g/t of regulating agent lime and efficient precipitator YJ-1600 g/t of copper ions and lead ions into a feed inlet of a first grinding machine during ore grinding;
(2) and (2) introducing the ore pulp obtained in the step (1) into a No. 1 stirring barrel, adding 2000g/t zinc sulfate serving as an inhibitor of zinc sulfide and 1000g/t sodium sulfite to mix for 3 minutes, then flowing into a No. 2 stirring barrel, and respectively adding Z-20018 g/t copper and lead collectors and YK 90610 g/t to mix for 2 minutes. When copper and lead are subjected to mixed flotation, Z-200 is a collector with better copper selectivity, YK906 is a collector with better lead selectivity, and the combination of the two reagents can better separate copper and lead from zinc and also has an auxiliary effect on obtaining better effect of subsequent copper and lead separation;
(3) and (3) introducing the ore pulp obtained in the step (2) into a flotation machine for copper-lead mixed flotation. In the process, primary roughing (5 minutes of flotation) and two scavenging (4 minutes of each of the first scavenging and the second scavenging) are carried out, wherein the first scavenging is carried out after 800g/t of zinc sulfide inhibitor zinc sulfate is added and 400g/t of sodium sulfite is added (3 minutes of size mixing), then the flotation is carried out after copper-lead collector Z-2005 g/t + YK 9065 g/t (2 minutes of size mixing), and the second scavenging is carried out after 400g/t of zinc sulfide inhibitor zinc sulfate is added and 200g/t of sodium sulfite is added (3 minutes of size mixing) and copper-lead collector Z-2002 g/t + YK 9062 g/t (2 minutes of size mixing). Obtaining copper-lead mixed rough concentrate and scavenging secondary tailings;
(4) introducing the scavenged secondary tailings obtained in the step (3) into a 3# stirring barrel, adding 100g/t of activating agent copper sulfate of zinc sulfide for size mixing for 3 minutes, then flowing into a 4# stirring barrel, adding 10g/t of foaming agent 2# oil and collecting agent YK 90635 g/t of zinc sulfide for size mixing for 2 minutes;
(5) and (4) introducing the ore pulp subjected to the step (4) into a flotation machine for zinc sulfide flotation. In the process, one roughing (5 minutes of flotation), three times of concentration (one, two and three times of flotation for 4 minutes, 3 minutes and 3 minutes respectively) and two times of scavenging (one and two times of scavenging for 4 minutes respectively) are carried out, wherein 300g/t and 100g/t of lime are respectively added into the first concentration and the second concentration (3 minutes of size mixing); scavenging an activator copper sulfate added with zinc sulfide 50g/t (mixing for 3 minutes), and then adding a collector YK 90615 g/t (mixing for 2 minutes) of zinc sulfide; adding 25g/t (3 minutes for size mixing) of activator copper sulfate of zinc sulfide in scavenging II, and adding collector YK 90610 g/t (2 minutes for size mixing) of zinc sulfide. Obtaining zinc sulfide concentrate and tailings. In the flotation process, YK906 is used as a collecting agent for zinc sulfide and lead sulfide, so that the influence of return water of zinc flotation on copper-lead mixed flotation is effectively overcome;
(6) and (3) sending the copper-lead mixed rough concentrate obtained in the step (3) into a ball mill for regrinding to obtain a mixture with the granularity of less than 0.038mm and up to 90%, introducing the mixture into a No. 5 stirring barrel, adding 200g/t zinc sulfate serving as an inhibitor of zinc sulfide and 100g/t sodium sulfite for size mixing for 3 minutes, then flowing into a No. 6 stirring barrel, and adding a copper-lead collecting agent Z-2002 g/t and YK 9063 g/t for size mixing for 2 minutes. Through regrinding the bulk concentrate, copper minerals, lead minerals and zinc minerals are better separated, and the flotation separation effect is improved;
(7) and (3) introducing the copper-lead coarse concentrate pulp subjected to the step (6) into a flotation machine for copper-lead mixed concentration, and performing mixed concentration for three times (wherein the first concentration, the second concentration and the third concentration are performed for 4 minutes, 3 minutes and 3 minutes respectively). In the process, zinc sulfate which is an inhibitor of zinc sulfide added twice is selected to be 100g/t and sodium sulfite is selected to be 50g/t (size mixing is carried out for 3 minutes). Wherein, the first tailing of concentration and the ore pulp of the No. 2 mixing tank in the step (2) are combined and flow into the copper-lead mixed roughing operation, and the copper-lead mixed concentrate is concentrated to the concentration of 60 percent;
(8) the pretreatment of copper-lead bulk concentrate (60%) is realized by three-stage stirring (7 #, 8# and 9 #). And (3) feeding the copper-lead bulk concentrate obtained in the step (7) into a No. 7 stirring barrel, adding 1200g/t of sodium sulfide and 2800g/t of activated carbon, stirring for 10 minutes, then sequentially flowing into No. 8 and No. 9 stirring barrels, and stirring for 10 minutes respectively. Sodium sulfide desorbs the collecting agent on the surface of the mineral into the solution, the desorption efficiency is in direct proportion to the concentration of the sodium sulfide, the active carbon can adsorb the flotation reagent in the solution, the adsorption rate is in direct proportion to the concentration of the active carbon, and the two types of active carbon are combined to effectively remove the flotation reagent in the ore pulp; in order to avoid short circuit of the adsorbent activated carbon during stirring, 8# and 9# stirring barrels are added for continuous air conditioning;
(9) and (3) introducing the ore pulp obtained in the step (8) into a 10# stirring barrel, adding an inhibitor YK 5205000 g/t of copper sulfide for high-concentration pulp mixing for 3 minutes, adding a collecting agent YK 902450 g/t of lead sulfide and foaming agent 2# oil 100g/t into an 11# stirring barrel, stirring for 2 minutes at high concentration, and then adding clear water for pulp mixing until the ore pulp concentration is 10% -20%. High-concentration pulp mixing is carried out before adding clear water, and the inhibition effect of an inhibitor YK520 on copper sulfide is improved;
(10) and (3) feeding the ore pulp subjected to the step (9) into a copper-lead separation flotation machine for separation, and performing primary roughing (flotation for 3 minutes), tertiary fine separation (flotation for one, two and three times for 3 minutes, 2 minutes and 2 minutes respectively), and scavenging for two times (scavenging for one and two times for 2 minutes respectively). Selecting one and two inhibitors YK520 respectively added with copper sulfide as 600g/t and 300g/t (each for 3 minutes); adding copper sulfide inhibitors YK520 at 2000g/t and 1000g/t (3 minutes for each size mixing) respectively for one scavenging and adding lead sulfide collectors YK902 at 150g/t and 100g/t (2 minutes for each size mixing) respectively for one scavenging and two scavenging; meanwhile, the foaming agent 2# oil is added in a scavenging way at 50g/t (size mixing for 2 minutes). Finally obtaining copper sulfide concentrate and lead sulfide concentrate.
Has the advantages that:
(1) the recovery rate of copper, lead and zinc is greatly increased, and harmful impurities which have great influence on smelting in each product are reduced;
(2) the production cost is low. The method has the advantages that the unit price of the used medicament is reduced, the equipment configuration is reduced, and the production cost is naturally reduced;
(3) the flotation backwater utilization rate is high. The method can collect the backwater uniformly, realize uniform distribution and use, greatly improve the backwater utilization rate, optimize the medium environment, improve the recovery rate and have obvious operation controllability advantages;
(4) the adaptability to ores with different properties is stronger. The method improves key links pertinently, and meanwhile, a beneficiation reagent with strong selectivity is used, so that the adaptability of the method is naturally enhanced;
(5) the used medicament has low toxicity, quick degradation, little environmental pollution and high safety and controllability. The method cancels highly toxic sodium cyanide and sodium dichromate, and particularly cancels the inhibitor sodium cyanide of copper sulfide which is necessary to be used when the prior scheme of flotation of lead by inhibiting copper is necessary, and uses a medicament which has very little toxicity and rapid degradation, thereby having less environmental pollution and high safety and controllability.
Drawings
FIG. 1-1 and FIG. 1-2 together are the process flow of the present invention;
FIG. 2 is a schematic diagram showing the equipment relationship of a copper lead zinc sulfide ore treatment system.
Detailed Description
The copper-lead-zinc sulfide ore treatment system is characterized in that a powder bin is connected with a ball mill I through a conveyor belt, the ball mill I, a pump pool I, an ore pulp pump I and a hydrocyclone are sequentially connected in series, the lower end of the hydrocyclone is connected with a pump pool II through the ball mill II, and the upper end of the hydrocyclone is sequentially connected with a 1# stirring barrel, a 2# stirring barrel, a copper-lead roughing machine, a copper-lead scavenging machine I, a copper-lead scavenging machine II, a 3# stirring barrel, a 4# stirring barrel, a zinc roughing machine, a zinc scavenging machine I and a zinc scavenging machine II in series;
the concentrate outlet of the copper-lead scavenging machine II is connected with the copper-lead scavenging machine I, and the concentrate outlet of the copper-lead scavenging machine I is connected with the copper-lead roughing machine;
the concentrate outlet of the zinc scavenging machine II is connected with the zinc scavenging machine I; a concentrate outlet of the zinc scavenging machine is connected with a zinc roughing machine;
the concentrate outlet of the zinc roughing machine is connected with a first zinc concentrating machine in the zinc concentrating system;
the zinc concentration machine III, the zinc concentration machine II and the tailings outlet of the zinc concentration machine I are sequentially connected in series, the tailings outlet of the zinc concentration machine I is connected with the zinc roughing machine, the concentrate outlet of the zinc concentration machine I is connected with the zinc concentration machine II, the concentrate outlet of the zinc concentration machine II is connected with the zinc concentration machine III, and the concentrate outlet of the zinc concentration machine III is zinc sulfide concentrate;
the concentrate outlet of the copper-lead roughing separator is sequentially connected with a pump pool III, an ore pulp pump II, a ball mill III, a No. 5 stirring barrel, a No. 6 stirring barrel and a copper-lead cleaning machine in series, the tailing outlet of the copper-lead cleaning machine I is connected with the copper-lead roughing separator, and the tailing outlet of the copper-lead roughing separator is connected with the copper-lead scavenging machine;
the copper-lead concentration machine III, the copper-lead concentration machine II and the copper-lead concentration machine I are sequentially connected in series through a tailing outlet, a concentrate outlet of the copper-lead concentration machine I is connected with the copper-lead concentration machine II, and a concentrate outlet of the copper-lead concentration machine II is connected with the copper-lead concentration machine III;
the three concentrate outlets of the copper-lead concentration machine are sequentially connected with the thickener, the 7# stirring barrel, the 8# stirring barrel, the 9# stirring barrel, the 10# stirring barrel, the 11# stirring barrel and the lead roughing machine in series;
the lead concentration machine III, the lead concentration machine II, the lead concentration machine I, the lead roughing machine, the lead scavenging machine I and the lead scavenging machine II are sequentially connected in series through tailing outlets, and the tailing outlets of the lead scavenging machine II are copper sulfide concentrates; and a concentrate outlet of the lead scavenging machine II is connected with the lead scavenging machine I, a concentrate outlet of the lead scavenging machine I is connected with the lead roughing machine, a concentrate outlet of the lead roughing machine is connected with the lead dressing machine I, a concentrate outlet of the lead dressing machine I is connected with the lead dressing machine II, a concentrate outlet of the lead dressing machine II is connected with the lead dressing machine III, and a concentrate outlet of the lead dressing machine III is lead sulfide concentrate.
Example one
The majority of copper minerals in the copper-lead-zinc sulfide ore are chalcopyrite, and a small amount of chalcocite, copper blue and the like are also contained; the lead mineral is galena; the zinc mineral is sphalerite. In addition, the ore also contains a small amount of magnetite, pyrrhotite, pyrite, arsenopyrite and limonite. The gangue minerals mainly include tremolite and diopside, and calcite and black column are small amount of quartz, garnet, muscovite and apatite. The multielement analysis is shown in table 1.
Adopt the utility model discloses implement this ore, concrete step is as follows:
(1) aiming at copper sulfide, lead and zinc sulfide ores to be subjected to flotation separation, grinding the copper sulfide, lead and zinc sulfide ores to the granularity of less than 0.074mm and up to 85% under the condition of ore grinding concentration of 70% -75% through an ore grinding system, then adjusting the concentration of ore pulp to 28% -35%, and adding 1000g/t of regulating agent lime and efficient precipitator YJ-1600 g/t of copper ions and lead ions into a feed inlet of a first grinding machine during ore grinding;
(2) introducing the ore pulp obtained in the step (1) into a No. 1 stirring barrel, adding zinc sulfate serving as an inhibitor of zinc sulfide, adding 1000g/t sodium sulfite, mixing for 3 minutes, then flowing into a No. 2 stirring barrel, and respectively adding collecting agents Z-20018 g/t of copper and lead and YK 90610 g/t for mixing for 2 minutes;
(3) and (3) introducing the ore pulp obtained in the step (2) into a flotation machine for copper-lead mixed flotation. In the process, primary roughing (5 minutes of flotation) and two scavenging (4 minutes of each of the first scavenging and the second scavenging) are carried out, wherein the first scavenging is carried out after 800g/t of zinc sulfide inhibitor zinc sulfate is added and 400g/t of sodium sulfite is added (3 minutes of size mixing), then the flotation is carried out after copper-lead collector Z-2005 g/t + YK 9065 g/t (2 minutes of size mixing), and the second scavenging is carried out after 400g/t of zinc sulfide inhibitor zinc sulfate is added and 200g/t of sodium sulfite is added (3 minutes of size mixing) and copper-lead collector Z-2002 g/t + YK 9062 g/t (2 minutes of size mixing). Obtaining copper-lead mixed rough concentrate and scavenging secondary tailings;
(4) introducing the scavenged secondary tailings obtained in the step (3) into a 3# stirring barrel, adding 100g/t of activating agent copper sulfate of zinc sulfide for size mixing for 3 minutes, then flowing into a 4# stirring barrel, adding 10g/t of foaming agent 2# oil and collecting agent YK 90635 g/t of zinc sulfide for size mixing for 2 minutes;
(5) and (4) introducing the ore pulp subjected to the step (4) into a flotation machine for zinc sulfide flotation. In the process, one roughing (5 minutes of flotation), three times of concentration (one, two and three times of flotation for 4 minutes, 3 minutes and 3 minutes respectively) and two times of scavenging (one and two times of scavenging for 4 minutes respectively) are carried out, wherein 300g/t and 100g/t of lime are respectively added into the first concentration and the second concentration (3 minutes of size mixing); scavenging an activator copper sulfate added with zinc sulfide 50g/t (mixing for 3 minutes), and then adding a collector YK 90615 g/t (mixing for 2 minutes) of zinc sulfide; adding 25g/t (3 minutes for size mixing) of activator copper sulfate of zinc sulfide in scavenging II, and adding collector YK 90610 g/t (2 minutes for size mixing) of zinc sulfide. Obtaining zinc sulfide concentrate and tailings;
(6) feeding the copper-lead mixed rough concentrate obtained in the step (3) into a ball mill for regrinding to obtain a mixture with the granularity of less than 0.038mm and up to 90%, introducing the mixture into a No. 5 stirring barrel, adding zinc sulfide inhibitor zinc sulfate 200g/t + sodium sulfite 100g/t for size mixing for 3 minutes, then flowing into a No. 6 stirring barrel, and adding copper-lead collecting agent Z-2002 g/t + YK 9063 g/t for size mixing for 2 minutes;
(7) and (3) introducing the copper-lead coarse concentrate pulp subjected to the step (6) into a flotation machine for copper-lead mixed concentration, and performing mixed concentration for three times (wherein the first concentration, the second concentration and the third concentration are performed for 4 minutes, 3 minutes and 3 minutes respectively). In the process, zinc sulfate which is an inhibitor of zinc sulfide added twice is selected to be 100g/t and sodium sulfite is selected to be 50g/t (size mixing is carried out for 3 minutes). Wherein, the first tailing of concentration and the ore pulp of the No. 2 mixing tank in the step (2) are combined and flow into the copper-lead mixed roughing operation, and the copper-lead mixed concentrate is concentrated to the concentration of 60 percent;
(8) the pretreatment of copper-lead bulk concentrate (60%) is realized by three-stage stirring (7 #, 8# and 9 #). Feeding the copper-lead bulk concentrate obtained in the step (7) into a No. 7 stirring barrel, adding 1200g/t of sodium sulfide and 2800g/t of activated carbon, stirring for 10 minutes, then sequentially flowing into No. 8 and No. 9 stirring barrels, and stirring for 10 minutes respectively;
(9) introducing the ore pulp obtained in the step (8) into a 10# stirring barrel, adding an inhibitor YK 5205000 g/t of copper sulfide for high-concentration pulp mixing for 3 minutes, adding a collecting agent YK 902450 g/t of lead sulfide and foaming agent 2# oil 100g/t into an 11# stirring barrel, stirring for 2 minutes at high concentration, and then adding clear water, and mixing until the ore pulp concentration is 10% -20%;
(10) and (3) feeding the ore pulp subjected to the step (9) into a copper-lead separation flotation machine for separation, and performing primary roughing (flotation for 3 minutes), tertiary fine separation (flotation for one, two and three times for 3 minutes, 2 minutes and 2 minutes respectively), and scavenging for two times (scavenging for one and two times for 2 minutes respectively). Selecting one and two inhibitors YK520 respectively added with copper sulfide as 600g/t and 300g/t (each for 3 minutes); adding copper sulfide inhibitors YK520 at 2000g/t and 1000g/t (3 minutes for each size mixing) respectively for one scavenging and adding lead sulfide collectors YK902 at 150g/t and 100g/t (2 minutes for each size mixing) respectively for one scavenging and two scavenging; meanwhile, the foaming agent 2# oil is added in a scavenging way at 50g/t (size mixing for 2 minutes). Finally obtaining copper sulfide concentrate and lead sulfide concentrate.
Example two
The copper mineral in the complex copper sulfide lead-zinc ore is mainly chalcopyrite, and trace tetrahedrite, chalcocite and chalcocite are additionally arranged; the lead mineral is galena; the zinc mineral is marmatite; the iron minerals are magnetite and siderite, and then a small amount of hematite and limonite exist, and the other metal minerals are pyrite, a small amount of white iron ore and arsenopyrite; the gangue minerals mainly comprise quartz and dolomite, and secondly comprise calcite, kaolinite, and a small amount of biotite, orthoclase, plagioclase and chlorite. The multielement analysis is shown in table 3.
Adopt the utility model discloses implement this ore, concrete step is as follows:
(1) aiming at copper sulfide, lead and zinc sulfide ores to be subjected to flotation separation, grinding the copper sulfide, lead and zinc sulfide ores to the granularity of less than 0.074mm and up to 85% under the condition of ore grinding concentration of 70% -75% through an ore grinding system, then adjusting the concentration of ore pulp to 28% -35%, and adding 1000g/t of regulating agent lime and efficient precipitator YJ-1600 g/t of copper ions and lead ions into a feed inlet of a first grinding machine during ore grinding;
(2) introducing the ore pulp obtained in the step (1) into a No. 1 stirring barrel, adding zinc sulfate serving as an inhibitor of zinc sulfide, adding 1000g/t sodium sulfite, mixing for 3 minutes, then flowing into a No. 2 stirring barrel, and respectively adding collecting agents Z-20018 g/t of copper and lead and YK 90610 g/t for mixing for 2 minutes;
(3) and (3) introducing the ore pulp obtained in the step (2) into a flotation machine for copper-lead mixed flotation. In the process, primary roughing (5 minutes of flotation) and two scavenging (4 minutes of each of the first scavenging and the second scavenging) are carried out, wherein the first scavenging is carried out after 800g/t of zinc sulfide inhibitor zinc sulfate is added and 400g/t of sodium sulfite is added (3 minutes of size mixing), then the flotation is carried out after copper-lead collector Z-2005 g/t + YK 9065 g/t (2 minutes of size mixing), and the second scavenging is carried out after 400g/t of zinc sulfide inhibitor zinc sulfate is added and 200g/t of sodium sulfite is added (3 minutes of size mixing) and copper-lead collector Z-2002 g/t + YK 9062 g/t (2 minutes of size mixing). Obtaining copper-lead mixed rough concentrate and scavenging secondary tailings;
(4) introducing the scavenged secondary tailings obtained in the step (3) into a 3# stirring barrel, adding 100g/t of activating agent copper sulfate of zinc sulfide for size mixing for 3 minutes, then flowing into a 4# stirring barrel, adding 10g/t of foaming agent 2# oil and collecting agent YK 90635 g/t of zinc sulfide for size mixing for 2 minutes;
(5) and (4) introducing the ore pulp subjected to the step (4) into a flotation machine for zinc sulfide flotation. In the process, one roughing (5 minutes of flotation), three times of concentration (one, two and three times of flotation for 4 minutes, 3 minutes and 3 minutes respectively) and two times of scavenging (one and two times of scavenging for 4 minutes respectively) are carried out, wherein 300g/t and 100g/t of lime are respectively added into the first concentration and the second concentration (3 minutes of size mixing); scavenging an activator copper sulfate added with zinc sulfide 50g/t (mixing for 3 minutes), and then adding a collector YK 90615 g/t (mixing for 2 minutes) of zinc sulfide; adding 25g/t (3 minutes for size mixing) of activator copper sulfate of zinc sulfide in scavenging II, and adding collector YK 90610 g/t (2 minutes for size mixing) of zinc sulfide. Obtaining zinc sulfide concentrate and tailings;
(6) feeding the copper-lead mixed rough concentrate obtained in the step (3) into a ball mill for regrinding to obtain a mixture with the granularity of less than 0.038mm and up to 90%, introducing the mixture into a No. 5 stirring barrel, adding zinc sulfide inhibitor zinc sulfate 200g/t + sodium sulfite 100g/t for size mixing for 3 minutes, then flowing into a No. 6 stirring barrel, and adding copper-lead collecting agent Z-2002 g/t + YK 9063 g/t for size mixing for 2 minutes;
(7) and (3) introducing the copper-lead coarse concentrate pulp subjected to the step (6) into a flotation machine for copper-lead mixed concentration, and performing mixed concentration for three times (wherein the first concentration, the second concentration and the third concentration are performed for 4 minutes, 3 minutes and 3 minutes respectively). In the process, zinc sulfate which is an inhibitor of zinc sulfide added twice is selected to be 100g/t and sodium sulfite is selected to be 50g/t (size mixing is carried out for 3 minutes). Wherein, the first tailing of the concentration and the 2# stirring barrel ore pulp in the step (2) are combined and flow into the copper-lead mixed roughing operation, and the copper-lead mixed concentrate is concentrated to the concentration of 60%.
(8) The pretreatment of copper-lead bulk concentrate (60%) is realized by three-stage stirring (7 #, 8# and 9 #). Feeding the copper-lead bulk concentrate obtained in the step (7) into a No. 7 stirring barrel, adding 1200g/t of sodium sulfide and 2800g/t of activated carbon, stirring for 10 minutes, then sequentially flowing into No. 8 and No. 9 stirring barrels, and stirring for 10 minutes respectively;
(9) introducing the ore pulp obtained in the step (8) into a 10# stirring barrel, adding an inhibitor YK 5205000 g/t of copper sulfide for high-concentration pulp mixing for 3 minutes, adding a collecting agent YK 902450 g/t of lead sulfide and foaming agent 2# oil 100g/t into an 11# stirring barrel, stirring for 2 minutes at high concentration, and then adding clear water, and mixing until the ore pulp concentration is 10% -20%;
(10) and (3) feeding the ore pulp subjected to the step (9) into a copper-lead separation flotation machine for separation, and performing primary roughing (flotation for 3 minutes), tertiary fine separation (flotation for one, two and three times for 3 minutes, 2 minutes and 2 minutes respectively), and scavenging for two times (scavenging for one and two times for 2 minutes respectively). Selecting one and two inhibitors YK520 respectively added with copper sulfide as 600g/t and 300g/t (each for 3 minutes); adding copper sulfide inhibitors YK520 at 2000g/t and 1000g/t (3 minutes for each size mixing) respectively for one scavenging and adding lead sulfide collectors YK902 at 150g/t and 100g/t (2 minutes for each size mixing) respectively for one scavenging and two scavenging; meanwhile, the foaming agent 2# oil is added in a scavenging way at 50g/t (size mixing for 2 minutes). Finally obtaining copper sulfide concentrate and lead sulfide concentrate.
1. Adding 1000g/t of lime and an efficient copper and lead precipitator YJ600g/t into a first mill of an ore grinding system, grinding the materials to be less than 0.074mm and accounting for 85%, and adjusting the concentration to be 28% -35%;
2. adding zinc sulfate and sodium sulfite into a 1# stirring barrel according to the weight ratio of 2:1 to obtain 2000g/t +1000g/t (zinc sulfide inhibitor), mixing for 3 minutes, adding a copper collector Z-20018 g/t and a lead collector YK 9068 g/t into a 2# stirring barrel, mixing for 3 minutes, and performing copper-lead mixed roughing for 5 minutes;
3. feeding the copper-lead mixed rough concentrate into a ball mill for re-grinding until the content of the copper-lead mixed rough concentrate is less than 0.038mm and accounts for 90%;
4. adding 200g/t +100g/t of zinc sulfate and sodium sulfite into the reground ore pulp, and then carrying out copper-lead mixed concentration for 4 minutes;
5. concentrating the final copper-lead bulk concentrate to 60% in a pretreatment section, and then removing the chemicals (7 #, 8#, 9# stirring barrels);
6. adding 1200g/t (desorbent) of sodium sulfide and 2800g/t (adsorbent) of activated carbon into a 7# stirring barrel of the pretreatment section to perform size mixing;
7. continuously stirring three sections after adding sodium sulfide and active carbon in the pretreatment, wherein the stirring time of each section is 10 minutes, and the 8# and 9# stirring barrels are used for air-conditioning slurry;
8. adding a copper inhibitor YK 5205000 g/t into a No. 10 stirring barrel (ore pulp after removal of the agent) and stirring for 3 minutes at a high concentration, adding a lead collector YK 902450 g/t and a foaming agent 2# oil into a No. 11 stirring barrel and stirring for 2 minutes at a high concentration of 100g/t, then adding clear water to adjust the concentration to 10-20%, and performing lead roughing for 3 minutes (performing high-concentration size adjustment and low-concentration flotation separation);
9. copper-lead flotation separation and concentration, namely, adding 50g/t of lead collecting agent YK 902100 g/t and foaming agent No. 2 oil;
10. for a flotation reagent system, the same collecting agent YK906 is selected during copper-lead mixed flotation and zinc flotation, so that the phenomenon that different agents in backwater produce great influence on products is avoided.
11. In the copper-lead flotation separation, when a scheme of inhibiting copper and floating lead is adopted, a nontoxic, safe and environment-friendly inhibitor YK520 is used for replacing a highly toxic substance sodium cyanide.
Description of the drawings: 1) the ore pulp after being adjusted by adding the chemicals enters each flotation unit (operation) for flotation for a certain time (determined by research), so that a concentrate and a tailing are obtained, then the concentrate (foam product) enters the previous flotation unit, and the tailing enters the next flotation unit. Thus, a circuit (cycle) is formed by several flotation cells (operations), each ore treatment process comprising several circuits (determined according to the ore properties).
2) Roughing refers to the operation of primary separation of selected mineral raw materials, and rough concentration and tailings are obtained by separating raw ores through roughing; the concentration refers to the operation of further enriching the rough concentrate in order to improve the content of useful components of the rough concentrate and enable the rough concentrate to meet the industrial quality requirement; the scavenging refers to an operation for further recovering useful components from the rougher tailings.
Claims (1)
1. A copper sulfide lead-zinc ore treatment system is characterized in that a powder bin is connected with a ball mill I through a conveyor belt, the ball mill I, a pump pool I, an ore pulp pump I and a hydraulic cyclone are sequentially connected in series, the lower end of the hydraulic cyclone is connected with a pump pool II through a ball mill II, and the upper end of the hydraulic cyclone is sequentially connected with a 1# stirring barrel, a 2# stirring barrel, a copper-lead roughing machine, a copper-lead scavenging machine I, a copper-lead scavenging machine II, a 3# stirring barrel, a 4# stirring barrel, a zinc roughing machine, a zinc scavenging machine I and a zinc scavenging machine II in series;
the concentrate outlet of the copper-lead scavenging machine II is connected with the copper-lead scavenging machine I, and the concentrate outlet of the copper-lead scavenging machine I is connected with the copper-lead roughing machine;
the concentrate outlet of the zinc scavenging machine II is connected with the zinc scavenging machine I; a concentrate outlet of the zinc scavenging machine is connected with a zinc roughing machine;
the concentrate outlet of the zinc roughing machine is connected with a first zinc concentrating machine in the zinc concentrating system;
the zinc concentration machine III, the zinc concentration machine II and the tailings outlet of the zinc concentration machine I are sequentially connected in series, the tailings outlet of the zinc concentration machine I is connected with the zinc roughing machine, the concentrate outlet of the zinc concentration machine I is connected with the zinc concentration machine II, the concentrate outlet of the zinc concentration machine II is connected with the zinc concentration machine III, and the concentrate outlet of the zinc concentration machine III is zinc sulfide concentrate;
the concentrate outlet of the copper-lead roughing separator is sequentially connected with a pump pool III, an ore pulp pump II, a ball mill III, a No. 5 stirring barrel, a No. 6 stirring barrel and a copper-lead cleaning machine in series, the tailing outlet of the copper-lead cleaning machine I is connected with the copper-lead roughing separator, and the tailing outlet of the copper-lead roughing separator is connected with the copper-lead scavenging machine;
the copper-lead concentration machine III, the copper-lead concentration machine II and the copper-lead concentration machine I are sequentially connected in series through a tailing outlet, a concentrate outlet of the copper-lead concentration machine I is connected with the copper-lead concentration machine II, and a concentrate outlet of the copper-lead concentration machine II is connected with the copper-lead concentration machine III;
the three concentrate outlets of the copper-lead concentration machine are sequentially connected with the thickener, the 7# stirring barrel, the 8# stirring barrel, the 9# stirring barrel, the 10# stirring barrel, the 11# stirring barrel and the lead roughing machine in series;
the lead concentration machine III, the lead concentration machine II, the lead concentration machine I, the lead roughing machine, the lead scavenging machine I and the lead scavenging machine II are sequentially connected in series through tailing outlets, and the tailing outlets of the lead scavenging machine II are copper sulfide concentrates; and a concentrate outlet of the lead scavenging machine II is connected with the lead scavenging machine I, a concentrate outlet of the lead scavenging machine I is connected with the lead roughing machine, a concentrate outlet of the lead roughing machine is connected with the lead dressing machine I, a concentrate outlet of the lead dressing machine I is connected with the lead dressing machine II, a concentrate outlet of the lead dressing machine II is connected with the lead dressing machine III, and a concentrate outlet of the lead dressing machine III is lead sulfide concentrate.
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