CN102312099A - Copper sponge preparation process by reducing copper contained acidic leachate with iron powder - Google Patents
Copper sponge preparation process by reducing copper contained acidic leachate with iron powder Download PDFInfo
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- CN102312099A CN102312099A CN201110299853A CN201110299853A CN102312099A CN 102312099 A CN102312099 A CN 102312099A CN 201110299853 A CN201110299853 A CN 201110299853A CN 201110299853 A CN201110299853 A CN 201110299853A CN 102312099 A CN102312099 A CN 102312099A
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- iron powder
- acid leaching
- leaching solution
- copper
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 91
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052802 copper Inorganic materials 0.000 title abstract description 27
- 239000010949 copper Substances 0.000 title abstract description 27
- 230000002378 acidificating effect Effects 0.000 title abstract 4
- 238000002360 preparation method Methods 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 83
- 238000005406 washing Methods 0.000 claims abstract description 14
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 13
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 72
- 239000002253 acid Substances 0.000 claims description 71
- 239000000243 solution Substances 0.000 claims description 67
- 238000002386 leaching Methods 0.000 claims description 66
- 238000005649 metathesis reaction Methods 0.000 claims description 26
- 239000011259 mixed solution Substances 0.000 claims description 25
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 12
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 12
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 12
- 230000035484 reaction time Effects 0.000 claims description 11
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 8
- 229960004643 cupric oxide Drugs 0.000 claims description 7
- 229910001431 copper ion Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 4
- QUQFTIVBFKLPCL-UHFFFAOYSA-L copper;2-amino-3-[(2-amino-2-carboxylatoethyl)disulfanyl]propanoate Chemical compound [Cu+2].[O-]C(=O)C(N)CSSCC(N)C([O-])=O QUQFTIVBFKLPCL-UHFFFAOYSA-L 0.000 claims description 3
- 238000009795 derivation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000012824 chemical production Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 239000005751 Copper oxide Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 229910000431 copper oxide Inorganic materials 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000003978 infusion fluid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- -1 this Chemical compound 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a copper sponge preparation process, especially a copper sponge preparation process by reducing a copper contained acidic leachate with iron powder, and belongs to the technical field of chemical production and manufacture. Provided is copper sponge preparation process by reducing a copper contained acidic leachate with iron powder, with a low labor intensity and high automation degree. The intermediate comprises steps of: the iron powder and the copper contained acidic leachate, which participate in a reaction, are added into a main reaction tank of a reactor at a certain speed and treated with a certain displacement reaction under effect of a stirrer; then the mixture is sent into an intermediate reaction tank and treated with a slaking displacement reaction to generate copper sponge and ferrous sulphate; then the mixture is sent into a settler to separate the copper sponge at a settler bottom and a tail washing in an upper and middle part of the settler; at last, the copper sponge is collected through a dump valve at the settler bottom, and the tail washing is discharged from an overflow mouth at settler top.
Description
Technical field
The present invention relates to a kind of process method of producing copper sponge, especially relate to the process method that a kind of iron powder reducing cupric acid leaching solution is produced copper sponge, belong to Chemical Manufacture manufacturing technology field.
Background technology
In the prior art; The technology of using the cupric acid leaching solution to prepare copper sponge is intermittent type all; Its method is for putting into displacement slot with certain density cupric acid leaching solution earlier; Molar ratio by copper in the leach liquor adds a certain amount of reduced iron powder again, and reaction certain hour under machinery or the empty stirring of pressure is separated after the reaction completion and promptly obtains copper sponge.Produce the technology of copper sponge for the intermittent type replacement(metathesis)reaction; Existing many pieces of documents are mentioned and it are optimized; Like " copper sponge is produced in low grade copper oxide ore acid " of Duan Zhiyi, Sun Shengqi, Chinese comprehensive utilization of resources, the 27th phases 5 of May in 2009 roll up; Certain low grade copper oxide ore pickling liquor intermittent type of gold heap area being produced the technology of copper sponge optimizes; The acid immersion liquid that is respectively 5g/L, 8g/L, 10g/L, 15g/L to copper ion concentration is carried out reduction reaction with iron powder under the stirring velocity after the optimization, the reaction times, the yield of going back native copper was all less than 80% when being 8h; Recovery time, yield brought up to 95～98% when being 12h, this method of producing copper sponge, and long reaction time, level of automation and production efficiency are all lower.And for example old " drill traverse complex copper oxide ore is produced copper sponge " along side, Zhong Wenyuan; Non-ferrous metal (smelting part); 2000 01 phases proposed a kind of method that Zhaotong Prefecture, Yunnan complex copper oxide ore is produced copper sponge of optimizing, this technology through the leach liquor of medial launder after to the sedimentation clarification once more sedimentation to remove ore pulp residual in the leach liquor; Reduce the parcel of ore pulp to cupric ion; Thereby improve the rate of displacement of replacement(metathesis)reaction, the document is also analyzed with the economic benefit that is produced the cost structure after this technology of sponge copper work, Yiliang, Zhaotong employing, finds through this Economic and Efficiency Analysis; Though sponge copper work, Yiliang, Zhaotong takes this technology to obtain favorable economic benefit, prepare the copper sponge stage at leach liquor and have problems such as labour intensity is big, level of automation is low, pollution is big.
Summary of the invention
Technical problem to be solved by this invention is: what provide that a kind of labour intensity is little, level of automation is high produces the process method of copper sponge with iron powder reducing cupric acid leaching solution.
The technical scheme that adopts for solving the problems of the technologies described above is: iron powder reducing cupric acid leaching solution is produced the process method of copper sponge, may further comprise the steps,
The cupric acid leaching solution that to participate in reaction earlier adds in the main reactor with the speed of 193～1260kg/H with 30～100m3/h, iron powder, starts the whisking appliance in the main reactor simultaneously at this, makes cupric acid leaching solution and iron powder hybrid concurrency give birth to replacement(metathesis)reaction;
Then; Along with the continuous adding of cupric acid leaching solution and iron powder in the main reactor, add and take place the mixing liquid of replacement(metathesis)reaction in advance, the mixed solution spout from the main reactor lower sides flows into the intermediate reaction groove; Under the effect of the whisking appliance in the anti-groove in centre; Continue the slaking replacement(metathesis)reaction takes place, the cupric oxide in the cupric acid leaching solution is thoroughly replaced, generate the mixed solution that contains copper sponge and ferrous sulfate;
Then; In the intermediate reaction groove; The mixed solution that contains copper sponge and ferrous sulfate of complete ripeness replacement(metathesis)reaction takes place, in main reactor the generation of inflow intermediate reaction groove under the effect of mixed solution of replacement(metathesis)reaction, the spout from the sidewall of middle reactive tank middle and upper part; Flow in the subsider copper sponge of settlement separate one-tenth bottom and the tail washings that contains ferrous sulfate on top;
At last; The copper sponge that is deposited in the subsider bottom is emitted collection through the baiting valve that is arranged on the subsider bottom; The tail washings that is dissolved with ferrous sulfate is discharged from the riser on the sidewall of subsider top; So just, accomplished iron powder reducing cupric acid leaching solution and produced the technological process of copper sponge, and, whole replacement(metathesis)reaction process has continuously been carried out along with continuously adding iron charge and cupric acid leaching solution in the main reactor.
Further be that the reaction times of the mixed solution of cupric acid leaching solution and iron powder in main reactor and intermediate reaction groove is respectively 0.5～3.0h and 2.0～4.5h.
Further be that the whisking appliance that is arranged in main reactor and the intermediate reaction groove is an electric mixer.
Further be that the stirring velocity of electric mixer in main reactor and intermediate reaction groove is respectively 10～200rpm and 5～100rpm.
Further be; Cupric acid leaching solution and iron charge carry out in the process of slaking replacement(metathesis)reaction in the intermediate reaction groove; Every is extracted effusive tail washings at regular intervals and chemically examines from the riser of subsider top sidewall; When the content of the cupric ion in the tail washings surpasses prescribed value; The starting entrance end is communicated with the bottom of intermediate reaction groove, and exit end and the internal circulation system that the sidewall of main reactor is communicated with make content of copper ion surpass the interior mixed solution circulation repeatedly between main reactor and intermediate reaction groove of intermediate reaction groove of prescribed value.
Further be, adjacent two sub-samplings the time be spaced apart 0.5～5h.
Further be, internal circulation system is made up of steam piano, and the entrance end of steam piano constitutes the entrance end of internal circulation system, and exit end constitutes the exit end of internal circulation system.
Further be, participate in the cupric acid leaching solution of reaction that the content of cupric ion is that 3～15g/l, pH value are 0.5～2.0.
Further be that the waste gas that in the process of cupric acid leaching solution and iron powder generation replacement(metathesis)reaction, produces is answered groove through being arranged on main reactor with the middle pipeline derivation main reactor and the centre at groove top of answering.
Further be that the iron-holder of participating in the iron powder of reaction is 96%.
The invention has the beneficial effects as follows: adopt cupric acid leaching solution and the iron powder that to participate in reaction of the present invention continuously to add in the main reactor; And then with the cupric acid leaching solution of postorder adding main reactor and the increase of iron powder; And the mixed solution that makes the cupric acid leaching solution that reacted in advance and iron powder gets into intermediate reaction groove relaying supervention automatically and gives birth to reaction; The copper sponge that generates gets into the process method that subsider separates, sedimentation obtains copper sponge with sulfur acid ferrous mixed solution; The production process of producing copper sponge is continuously carried out, and raw materials for production add from the top of the main reactor of reactor drum, and the copper sponge of generation is collected from the bottom of subsider; Thereby production process is begun to the whole process of producing copper sponge from the adding of raw materials such as cupric acid leaching solution and iron powder; All do not need manual work to operate, improved the level of automation and the production efficiency of production process, saved in the existing batch production mode; Because the adding of raw material and the output of finished product all need be operated from the top of reactor drum; Thereby make the adding of raw materials for production such as cupric acid leaching solution, iron powder and the collection operation of copper sponge all need artificial situation of carrying out, and then reduced labor intensity of operating personnel in the production process greatly, reliable assurance is provided for enhancing productivity.
Description of drawings
The process method that Fig. 1 produces copper sponge for iron powder reducing cupric acid leaching solution of the present invention relate to the structural representation of reactor drum.
Be labeled as among the figure: main reactor 1, main reactor lower sides 11, mixed solution spout 12, whisking appliance 2, middle anti-groove 3, intermediate reaction groove middle and upper part sidewall 31, spout 32, subsider 4, subsider top sidewall 41, riser 42, baiting valve 5, internal circulation system 6, entrance end 61, exit end 62, steam piano 63, pipeline 7.
Embodiment
As shown in Figure 1 be that a kind of labour intensity provided by the invention is little, level of automation is high produce the process method of copper sponge with iron powder reducing cupric acid leaching solution.Said process method may further comprise the steps,
The cupric acid leaching solution that to participate in reaction earlier adds in the main reactor 1 with the speed of 193～1260kg/H with 30～100m3/h, iron powder, and the whisking appliance 2 in this starts main reactor 1 simultaneously makes cupric acid leaching solution and iron powder hybrid concurrency give birth to replacement(metathesis)reaction;
Then; Along with the continuous adding of cupric acid leaching solution and iron powder in the main reactor 1, add and take place the mixing liquid of replacement(metathesis)reaction in advance, the mixed solution spout 12 from main reactor lower sides 11 flows into the intermediate reaction groove 3; Under the effect of the whisking appliance 2 in the anti-groove 3 in centre; Continue the slaking replacement(metathesis)reaction takes place, the cupric oxide in the cupric acid leaching solution is thoroughly replaced, generate the mixed solution that contains copper sponge and ferrous sulfate;
Then; In intermediate reaction groove 3; The mixed solution that contains copper sponge and ferrous sulfate of complete ripeness replacement(metathesis)reaction takes place, in main reactor 1 generation of inflow intermediate reaction groove 3 under the effect of mixed solution of replacement(metathesis)reaction, the spout 32 from the middle reactive tank middle and upper part sidewall 31; Flow in the subsider 4 copper sponge of settlement separate one-tenth bottom and the tail washings that contains ferrous sulfate on top;
At last; The copper sponge that is deposited in subsider 4 bottoms is emitted collection through the baiting valve 5 that is arranged on the subsider bottom; The tail washings that is dissolved with ferrous sulfate is discharged from the riser 42 on the subsider top sidewall 41; So just, accomplished iron powder reducing cupric acid leaching solution and produced the technological process of copper sponge, and, whole replacement(metathesis)reaction process has continuously been carried out along with continuously adding iron charge and cupric acid leaching solution in the main reactor 1.Adopt above-mentioned produce the process method of copper sponge with iron powder reducing cupric acid leaching solution after; The production process of producing copper sponge is continuously carried out; Raw materials for production add from the top of the main reactor 1 of reactor drum; The copper sponge that generates is collected from the bottom of subsider 4, thereby makes production process begin all not need manual work to operate to the whole process of producing copper sponge from the adding of raw materials such as cupric acid leaching solution and iron powder; The level of automation and the production efficiency of production process have been improved; Saved in the existing batch production mode, because the adding of raw material all need operate from the top of reactor drum with the output of finished product, thus the situation that makes the collection operation of adding and the copper sponge of raw materials for production such as cupric acid leaching solution, iron powder all need manual work carry out; And then reduced labor intensity of operating personnel in the production process greatly, reliable assurance is provided for enhancing productivity.
In order further to enhance productivity, reduce labor intensity of operating personnel, the whisking appliance of process method of the present invention in main reactor 1 and intermediate reaction groove 3 is electric mixer; The stirring velocity of this electric mixer in main reactor 1 and intermediate reaction groove 3 is respectively 10～200rpm and 5～100rpm; The reaction times of the mixed solution of cupric acid leaching solution and iron powder in main reactor 1 and intermediate reaction groove 3 is respectively 0.5～3.0h and 2.0～4.5h.Can quicken the mixing velocity of cupric acid leaching solution and iron powder like this, and then accelerate the speed of response of mixture, the work that can effectively reduce operator again is strong, can also make the reaction times of said mixed solution abundant simultaneously, the collection that effectively improves copper.
In order to improve utilization ratio of raw materials; Improve the yield of copper in the mixed solution; In intermediate reaction groove 3, carry out in the process of slaking replacement(metathesis)reaction at cupric acid leaching solution and iron charge; Every is extracted effusive tail washings at regular intervals and chemically examines from the riser 42 of subsider top sidewall 41, when the content of the cupric ion in the tail washings surpassed prescribed value, starting entrance end 61 was communicated with the bottom of intermediate reaction groove 3; Exit end 62 and the internal circulation system 6 that the sidewall of main reactor 1 is communicated with, the intermediate reaction groove 3 interior mixed solutions that make content of copper ion surpass prescribed value circulate between main reactor 1 and intermediate reaction groove 3 repeatedly; Adjacent two sub-samplings the time be spaced apart 0.5～5h.Through of the repeatedly cyclical operation of described internal circulation system to mixed solution, both made mixing more abundant, can improve speed of response and the thorough rate of reaction again, thus effectively enhance productivity with mixed solution in the yield of copper.Low for what the structure that makes said internal circulation system 6 was tried one's best simply, cost of investment is tried one's best, internal circulation system 6 is made up of steam piano 63, and the entrance end of steam piano 63 constitutes the entrance end 61 of internal circulation system 6, and exit end constitutes the exit end 62 of internal circulation system 6.For the ease of the collection and treatment of the discharge of the sulphur-containing exhaust gas that produces in the production process and postorder to this sulphur-containing exhaust gas; The pollution that reduction causes surrounding enviroment; The waste gas that in the process of cupric acid leaching solution and iron powder generation replacement(metathesis)reaction, produces is answered groove 3 with the middle pipeline 7 derivation main reactor 1 at groove 3 tops of answering with the centre through being arranged on main reactor 1.So both made things convenient for the discharge of sulphur-containing exhaust gas, and be convenient to the collection and treatment of postorder again, rather than directly be discharged in the air, caused the pollution of surrounding enviroment this sulphur-containing exhaust gas.
In sum, adopt after the process method of the present invention, compare, have the following advantages with process method of the prior art:
At first because the turbulence effect of the effect of whisking appliance 2 and the acid infusion solution of cupric that gets into main reactor 1 continuously, make the acid infusion solution two of iron powder and cupric contact more from branch, thus fast reaction speed;
Secondly; Two-stage reductive reaction through main reactor 1 and intermediate reaction groove 3; And to the monitoring of content of copper ion in the reaction solution, thereby, well guaranteed the reduction ratio of copper through the higher reaction mixture of content of copper ion is played the round-robin operation through internal circulation system;
Once more; Because charging and discharging all are to carry out continuously, have saved the hand labor in the intermittent type reduction process, and have solved the reduction ratio problem of lower that causes because of personal errors; Can reduce the generation of the security incident under the tired more bad Working environment that is brought of manpower, level of automation is higher;
At last, waste gas, the waste liquid that in the reaction process of main reactor 1 and intermediate reaction groove 2, produces has continuously, the little characteristics of unit time amount, can reduce the volume and the investment of environmental protection facility greatly.
Below in conjunction with concrete embodiment process method of the present invention is further described.
Embodiment one:
With copper content is certain resource-type copper mine acid leaching solution of 3g/l, pH=1.2; The reductibility iron powder of iron level 96% is that 30m3/h, iron powder mass rate are the speed of 193kg/h by control leach liquor flow velocity, joins simultaneously respectively in the main reactor 1 of flow reactor; And turn on agitator 2; Wherein the rotating speed of the whisking appliance 2 in the main reactor 1 is 50rpm, and the rotating speed of the whisking appliance 2 in the intermediate reaction groove 3 is 20rpm, and cupric acid leaching solution and iron powder are controlled to be 5h from entering main reactor 1 to the reaction times of in subsider 4, collecting copper sponge; 48h works continuously; Sampling analysis at regular intervals, the yield that obtains this continuous reducing process process copper all is higher than 95%, average yield 97.2%.
Embodiment two:
With copper content is certain resource-type copper mine acid leaching solution of 8g/l, pH=0.8; The reductibility iron powder of iron level 96% is that 50m3/h, iron powder mass rate are the speed of 420kg/h by control leach liquor flow velocity, joins simultaneously respectively in the main reactor 1 of flow reactor; And turn on agitator 2; Wherein the rotating speed of the whisking appliance 2 in the main reactor 1 is 80rpm, and the rotating speed of the whisking appliance 2 in the intermediate reaction groove 3 is 20rpm, and cupric acid leaching solution and iron powder are controlled to be 4h from entering main reactor 1 to the reaction times of in subsider 4, collecting copper sponge; 36h works continuously; Sampling analysis at regular intervals, the yield that obtains this continuous reducing process process copper all is higher than 95%, average yield 96.7%.
Embodiment three:
Certain resource-type copper mine acid leaching solution with copper content 14g/l, pH=0.5; The reductibility iron powder of iron level 96% is that 60m3/h, iron powder mass rate are the speed of 880kg/h by control leach liquor flow velocity, joins simultaneously respectively in the main reactor 1 of flow reactor; And turn on agitator 2; Wherein the rotating speed of the whisking appliance 2 in the main reactor 1 is 100rpm, and the rotating speed of the whisking appliance 2 in the intermediate reaction groove 3 is 20rpm, and cupric acid leaching solution and iron powder are controlled to be 3h from entering main reactor 1 to the reaction times of in subsider 4, collecting copper sponge; 36h works continuously; Sampling analysis at regular intervals, the yield that obtains this continuous reducing process process copper all is higher than 94.5%, average yield 96.5%.
Embodiment four:
With certain resource-type copper mine acid leaching solution of copper content 12g/l, pH=2.0, the reductibility iron powder of iron level 96% is 100m3/h by control leach liquor flow velocity; The iron powder mass rate is the speed of 1260kg/h; Join simultaneously respectively in the main reactor 1 of flow reactor, and open and stir, wherein the rotating speed of the whisking appliance 2 in the main reactor 1 is 80rpm; The rotating speed of the whisking appliance 2 in the intermediate reaction groove 3 is 20rpm; And cupric acid leaching solution and iron powder be controlled to be 2h, the 36h that works continuously, sampling analysis at regular intervals from getting into main reactor 1 to reaction times of collection copper sponge subsider 4 in; The yield that obtains this continuous reducing process process copper all is higher than 84.6%, average yield 89.1%.
Because the yield of copper is too low in the reduction production process continuously, both increased cost, waste resource, the waste water of discharging also can cause big shallow-layer to dye to environment because copper content is too high;, processing parameter is adjusted for this reason, be specially: the steam piano internal circulation system of opening the main reactor bottom; The flow that reduces the adding of cupric acid leaching solution is 60m3/h, and the flow of iron powder is 756kg/h, and the rotating speed of adjusting the whisking appliance 2 in the main reactor 1 simultaneously is 120rpm; The rotating speed of the whisking appliance 2 in the intermediate reaction groove 3 is 15rpm; Be controlled to be 4h, the 24h that works continuously, sampling analysis at regular intervals from cupric acid leaching solution and iron powder from entering main reactor 1 to the reaction times of in subsider 4, collecting copper sponge; The yield that obtains this continuous reducing process process copper all is higher than 90.6%, average yield 95.9%.
Claims (10)
1. iron powder reducing cupric acid leaching solution is produced the process method of copper sponge, may further comprise the steps,
The cupric acid leaching solution that to participate in reaction earlier adds in the main reactor (1) with the speed of 193～1260kg/H with 30～100m3/h, iron powder; Whisking appliance (2) in this starts main reactor (1) simultaneously makes cupric acid leaching solution and iron powder hybrid concurrency give birth to replacement(metathesis)reaction;
Then; Along with the continuous adding of cupric acid leaching solution in the main reactor (1) and iron powder, add and take place the mixing liquid of replacement(metathesis)reaction in advance, the mixed solution spout (12) from main reactor lower sides (11) flows into the intermediate reaction groove (3); Under the effect of the whisking appliance (2) in the anti-groove in centre (3); Continue the slaking replacement(metathesis)reaction takes place, the cupric oxide in the cupric acid leaching solution is thoroughly replaced, generate the mixed solution that contains copper sponge and ferrous sulfate;
Then; In intermediate reaction groove (3); The mixed solution that contains copper sponge and ferrous sulfate of complete ripeness replacement(metathesis)reaction takes place, in main reactor (1) generation of inflow intermediate reaction groove (3) under the effect of mixed solution of replacement(metathesis)reaction, the spout (32) from the middle reactive tank middle and upper part sidewall (31); Flow in the subsider (4) copper sponge of settlement separate one-tenth bottom and the tail washings that contains ferrous sulfate on top;
At last; The copper sponge that is deposited in subsider (4) bottom is emitted collection through the baiting valve (5) that is arranged on the subsider bottom; The tail washings that is dissolved with ferrous sulfate is discharged from the riser (42) on the subsider top sidewall (41); So just, accomplished iron powder reducing cupric acid leaching solution and produced the technological process of copper sponge, and, whole replacement(metathesis)reaction process has continuously been carried out along with continuously adding iron charge and cupric acid leaching solution in the main reactor (1).
2. iron powder reducing cupric acid leaching solution according to claim 1 is produced the process method of copper sponge, it is characterized in that: the reaction times of the mixed solution of cupric acid leaching solution and iron powder in main reactor (1) and intermediate reaction groove (3) is respectively 0.5～3.0h and 2.0～4.5h.
3. iron powder reducing cupric acid leaching solution according to claim 1 is produced the process method of copper sponge, it is characterized in that: the whisking appliance (2) that is arranged in main reactor (1) and the intermediate reaction groove (3) is an electric mixer.
4. iron powder reducing cupric acid leaching solution according to claim 3 is produced the process method of copper sponge, it is characterized in that: the stirring velocity of electric mixer in main reactor (1) and intermediate reaction groove (3) is respectively 10～200rpm and 5～100rpm.
5. iron powder reducing cupric acid leaching solution according to claim 1 is produced the process method of copper sponge; It is characterized in that: cupric acid leaching solution and iron charge carry out in the process of slaking replacement(metathesis)reaction in intermediate reaction groove (3); Every is extracted effusive tail washings at regular intervals and chemically examines from the riser (42) of subsider top sidewall (41); When the content of the cupric ion in the tail washings surpasses prescribed value; Starting entrance end (61) is communicated with the bottom of intermediate reaction groove (3); Exit end (62) and the internal circulation system (6) that the sidewall of main reactor (1) is communicated with make content of copper ion surpass the interior mixed solution circulation repeatedly between main reactor (1) and intermediate reaction groove (3) of intermediate reaction groove (3) of prescribed value.
6. iron powder reducing cupric acid leaching solution according to claim 5 is produced the process method of copper sponge, it is characterized in that: adjacent two sub-samplings the time be spaced apart 0.5～5h.
7. iron powder reducing cupric acid leaching solution according to claim 5 is produced the process method of copper sponge; It is characterized in that: internal circulation system (6) is made up of steam piano (63); The entrance end of steam piano (63) constitutes the entrance end (61) of internal circulation system, and exit end constitutes the exit end (62) of internal circulation system.
8. iron powder reducing cupric acid leaching solution according to claim 1 is produced the process method of copper sponge, it is characterized in that: participate in the cupric acid leaching solution of reaction, the content of cupric ion is that 3～15g/l, acidity-basicity ph value are 0.5～2.0.
9. iron powder reducing cupric acid leaching solution according to claim 1 is produced the process method of copper sponge; It is characterized in that: the waste gas that in the process of cupric acid leaching solution and iron powder generation replacement(metathesis)reaction, produces, answer pipeline (7) the derivation main reactor (1) and the centre at groove (3) top to answer groove (3) through being arranged on main reactor (1) and centre.
10. produce the process method of copper sponge according to each described iron powder reducing cupric acid leaching solution in the claim 1～9, it is characterized in that: the iron-holder of participating in the iron powder of reaction is 96%.
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| CN107099677A (en) * | 2017-06-02 | 2017-08-29 | 绍兴上虞微益再生资源有限公司 | A kind of preparation technology of copper sponge |
| CN107876538A (en) * | 2017-10-17 | 2018-04-06 | 广西金川有色金属有限公司 | A kind of device and technique that Copper making comprehensive utilization of tailing is prepared to molysite |
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