CN101942679B - Method for preparing, pre-treating and dispersing superfine copper powder - Google Patents
Method for preparing, pre-treating and dispersing superfine copper powder Download PDFInfo
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- CN101942679B CN101942679B CN201010518175A CN201010518175A CN101942679B CN 101942679 B CN101942679 B CN 101942679B CN 201010518175 A CN201010518175 A CN 201010518175A CN 201010518175 A CN201010518175 A CN 201010518175A CN 101942679 B CN101942679 B CN 101942679B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910052802 copper Inorganic materials 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 59
- 239000012141 concentrate Substances 0.000 claims abstract description 57
- 238000002203 pretreatment Methods 0.000 claims abstract description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 18
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000006185 dispersion Substances 0.000 claims description 41
- 239000003795 chemical substances by application Substances 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 28
- 229920000159 gelatin Polymers 0.000 claims description 27
- 235000019322 gelatine Nutrition 0.000 claims description 27
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 22
- 108010010803 Gelatin Proteins 0.000 claims description 21
- 239000008273 gelatin Substances 0.000 claims description 21
- 235000011852 gelatine desserts Nutrition 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 21
- 238000005868 electrolysis reaction Methods 0.000 claims description 20
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 17
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 17
- 229960004418 trolamine Drugs 0.000 claims description 15
- 239000011780 sodium chloride Substances 0.000 claims description 11
- 238000000498 ball milling Methods 0.000 claims description 9
- 239000001828 Gelatine Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002270 dispersing agent Substances 0.000 abstract description 3
- 239000003292 glue Substances 0.000 abstract description 3
- 108091006629 SLC13A2 Proteins 0.000 abstract 2
- 239000000126 substance Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910018557 Si O Inorganic materials 0.000 description 1
- NSOXQYCFHDMMGV-UHFFFAOYSA-N Tetrakis(2-hydroxypropyl)ethylenediamine Chemical compound CC(O)CN(CC(C)O)CCN(CC(C)O)CC(C)O NSOXQYCFHDMMGV-UHFFFAOYSA-N 0.000 description 1
- 229910009369 Zn Mg Inorganic materials 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000009867 copper metallurgy Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004137 mechanical activation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a method for preparing, pre-treating and dispersing superfine copper powder, comprising the following steps of: (1) placing powdered copper concentrate in a high-energy mixing ball mill, adding water, diluted hydrochloric acid and NaC1 to adjust the pH to 4-5, and carrying out mechanochemical pre-treatment to obtain pre-treated copper concentrate pulp; (2) mixing the pre-treated copper concentrate pulp obtained in the step (1) with right amount of diluted hydrochloric acid and water to make the pH of the solid-liquid mixed system be 1-1.5, and adding the NaC1 to obtain electrolytic copper concentrate pulp; (3) preparing combined dispersant which is obtained via mixing triethanolamine and animal glue in the proportion of 2-4: 1; (4) adding the electrolytic copper concentrate pulp obtained in the step (2) into the anode area of an electrolytic bath and adding the combined dispersant obtained in the step (3) into the cathode area of the electrolytic bath; and (5) electrolyzing to prepare the superfine copper powder. The method simplifies the technology of preparing the superfine copper powder, shortens the processing flow and brings good dispersing effect.
Description
Technical field
The present invention relates to a kind of method of hydrometallurgy, be particularly useful for preparing superfine cupper powder.
Background technology
The mutual conversion of mechanical force and chemical general reference mechanical movement energy and chemical energy.With the mechanochemical method difficult ore dressing of processing low-grade effectively, significant to comprehensive utilization of resources and deep processing.At present, mechanical force and chemical mainly is that mineral are produced mechanical activation in hydrometallurgy, thereby improves leaching process, and the mechanical force and chemical activation can be used for the copper ore concentrates in-pulp electrolysis and prepares superfine cupper powder.
Copper ore concentrates is that low-grade cupric raw ore is handled the concentrate that reaches the certain mass index through ore-dressing technique, can directly supply smeltery's copper metallurgy.Prepare with the copper ore concentrates in-pulp electrolysis in the process of superfine cupper powder, along with the refinement of copper powder granularity, specific surface area and surface energy constantly increase, and system is in order to keep steady state, and subparticle will be reunited each other, and particle is tending towards growing up.In order to eliminate the reunion of superfine cupper powder, using dispersion agent is the best measure that suppresses reunion.Dispersion agent is utilized in the adsorption of solid-liquid interface on the one hand; Formation one deck liquid film hinders between particle and is in contact with one another, and reduces the surface tension at interface, reduces adsorptive power capillaceous; Can also prevent the particle contact and produce repulsive force through Coulomb force and sterically hindered effect, suppress the formation of coacervate.The tensio-active agent that uses as dispersion agent on the other hand has the polar group of hydrophilic oleophobic and the non-polar group of oleophilic drainage simultaneously; This molecule has a part of water soluble; And the easy dual nature of in water, escaping of another part, the result causes surfactant molecule in its aqueous solution, to be easy to be adsorbed on and forms unique unimolecular film that aligns on the O/W interface, can reduce the surface tension of metal-powder effectively; Improve the wettability of solid particulate, thereby reach dispersion effect.The kind of dispersion agent is more, comprises macromolecule organic, tensio-active agent and some complex compounds etc. of close solution.
Chinese patent document CN101007354A has announced a kind of method of directly utilizing preparing ultra-fine copper powder from copper concentrate ore; Take earlier copper ore concentrates to be put into high-energy stirring mill and carry out the mechanical force and chemical pre-treatment; Copper ore concentrates is carried out activation and reagent removal (sloughing flotation reagent), and the copper ore concentrates after will handling is again put into the anode pond of membrane electrolyser and is immersed in the electrolytic solution that adds dispersion agent, and membrane electrolyser is in the ultrasonic field; Between anode, negative electrode, pass to direct current; Under the ultrasonic field effect, then separate out with the ultrafine powder powder through the copper that anodic reaction leaches at negative electrode, collect superfine cupper powder.Because the dispersion agent in this method is selected single Sodium hexametaphosphate 99, water glass, gelatin, quadrol, organosilicon or vinyl resin for use, dispersion effect is comparatively general, with the granularity that directly influences the superfine cupper powder for preparing.
Summary of the invention
The pre-treatment and the dispersing method that the purpose of this invention is to provide a kind of preparing ultra-fine copper powder from copper concentrate ore, this method simplified the preparation superfine cupper powder technology, shortened work flow, and dispersion effect is fine.
The technical scheme that realizes the object of the invention is that a kind of superfine cupper powder prepares pre-treatment and the dispersive method has following steps:
1. pre-treatment: with copper content is that 20wt%～30wt%, the abundance of granularity between 15～246 μ m are put into the high-energy stirring ball mill machine at the pulverous copper ore concentrates more than 90%; Add an amount of water in the stirring; Add an amount of NaCl and Hydrogen chloride again and carry out stirring ball-milling, the add-on of Hydrogen chloride makes that pH is 4 ~ 5; Along with constantly carrying out of stirring ball-milling, and copper ore concentrates is carried out activation and reagent removal, obtain pre-treatment copper ore concentrates ore pulp;
2. the pre-treatment copper ore concentrates ore pulp that in stirring 1. step is obtained mixes with an amount of Hydrogen chloride and water and obtains solid-liquid mixing system; In the mixing; Cupric ion in the pre-treatment copper ore concentrates ore pulp dissolves in the liquid of solid-liquid mixing system; The Hydrogen chloride that is added and the weight of water are 8～12 times of weight of pulverous copper ore concentrates, and the pH of solid-liquid mixing system is 1～1.5; Add the ratio of the NaCl of 450 ~ 550kg then according to Powdered copper ore concentrates per ton, under agitation NaCl is added in the above-mentioned solid-liquid mixing system and mix, obtain electrolysis and use the copper ore concentrates ore pulp;
3. prepare combined dispersion agent: stir down gelatin is mixed with trolamine, obtain combined dispersion agent, the weight ratio of trolamine and gelatin is 2～4: 1;
4. the electrolysis that 2. step is obtained is added the anode electrolytic cell district to the copper ore concentrates ore pulp, the cathodic area that the combined dispersion agent that 3. step is obtained adds electrolyzer to; The add-on of combined dispersion agent is confirmed according to the ratio that Powdered copper ore concentrates per ton adds the combined dispersion agent of 1000～2000g;
5. electrolytic preparation superfine cupper powder: during electrolysis, the distance between anode and the negative electrode is 4 cm ~ 5cm, and current density is 250 A/m
2~ 350A/m
2, it is 70 ℃ ~ 80 ℃ that the temperature of copper ore concentrates ore pulp is used in whole electrolysis, adopts hairbrush manually to scrape powder the copper powder on the negative electrode is scraped in the product scoop.
Above-mentioned steps 1. in, the add-on of water is 2～4 times of pulverous copper ore concentrates weight.
Above-mentioned steps 1. in, when carrying out stirring ball-milling, the weight ratio of steel ball weight and pulverous copper ore concentrates is 3～5: 1, steel ball size is 3～5mm, soak time is to be 0.5～1.5h the agitation grinding time.
Above-mentioned steps 5. in, said electrolysis time is 2h ~ 4h, scraping the powder timed interval is 3 min ~ 5min.
1. above-mentioned steps is that concentration is the HCL aqueous solution of 8wt%～12 wt% with the Hydrogen chloride that step is adopted in 2..
Above-mentioned steps 3. in used gelatin be technical gelatine.
The present invention has positive effect:
(1) superfine cupper powder of the present invention prepares that pre-treatment and dispersive method have been simplified METAL EXTRACTION, copper powder production, powder disperses and process such as surface-treated, has shortened metallurgical and materials processed flow process, has that flow process is lacked, the technology characteristic of simple.
(2) superfine cupper powder of the present invention prepares dispersion agent that pre-treatment and dispersive method the adopt combined dispersion agent for " gelatin+trolamine ", and gelatin is for being the technical gelatine that feed purification obtains with gelatine and hide glue.Gelatin and trolamine directly are added on the cathodic area of in-pulp electrolysis groove by fixed proportioning and consumption, reach the dispersive purpose while preparing, dispersion effect is outstanding.The combined dispersion agent of " gelatin+trolamine " is all better than the effect of dispersion agents such as single employing gelatin, trolamine or Sodium hexametaphosphate 99.
Embodiment
(embodiment 1)
A kind of superfine cupper powder of present embodiment prepares pre-treatment and dispersive method.Pulverous copper ore concentrates of selecting the Jiangxi Dexing Copper Mine dashan concentrator for use is a raw material.The concrete composition of this copper ore concentrates is as shown in table 1, and size-grade distribution is as shown in table 2.
Table 1
| Element | Cu | Al | Si | O | S | K | Ca |
| Content (%) | 24.183 | 2.180 | 4.956 | 13.521 | 28.126 | 0.693 | 0.831 |
| Element | Fe | Zn | Mg | Pb | Mo | Sb | ? |
| Content (%) | 23.390 | 0.087 | 0.511 | 0.186 | 0.154 | 0.163 | ? |
Table 2
| Granularity (μ m) | Differential distribution (%) | Cumulative distribution (%) |
| ≤15 | 2.61 | 2.61 |
| 15-43 | 13.81 | 16.42 |
| 43-74 | 56.21 | 72.63 |
| 74-104 | 7.75 | 80.38 |
| 104-147 | 9.64 | 90.02 |
| 147-175 | 2.75 | 92.77 |
| 175-246 | 4.90 | 97.67 |
| ≥246 | 2.33 | 100.00 |
In experimentation; Get the above-mentioned copper ore concentrates of 500g and put into the high-energy stirring ball mill machine; Adding weight in the stirring is 3 times water of pulverous copper ore concentrates, and the NaCl that adds an amount of Hydrogen chloride and 245g again carries out stirring ball-milling, and Hydrogen chloride is that concentration is the HCL aqueous solution of 10 wt%.The add-on of Hydrogen chloride makes that pH is 5.。When carrying out stirring ball-milling, the weight ratio of steel ball weight and pulverous copper ore concentrates is 5: 1, and steel ball size is 3mm, and activation and reagent removal time (also being the agitation grinding time) are 0.5h.Along with constantly carrying out of stirring ball-milling, and copper ore concentrates is carried out activation and reagent removal (also promptly remove floatation process added medicament), obtain pre-treatment copper ore concentrates ore pulp.
Pre-treatment copper ore concentrates ore pulp is mixed with an amount of Hydrogen chloride and water again and obtain solid-liquid mixing system, Hydrogen chloride is that concentration is the HCL aqueous solution of 8wt%～12 wt%.In the mixing, the cupric ion in the pre-treatment copper ore concentrates ore pulp dissolves in the liquid of solid-liquid mixing system, and the Hydrogen chloride that is added and the weight of water are 11 times of weight of pulverous copper ore concentrates, and the pH of solid-liquid mixing system is 1.Add the ratio of the NaCl of 450 ~ 550kg then according to Powdered copper ore concentrates per ton, under agitation NaCl is added in the above-mentioned solid-liquid mixing system and mix, obtain electrolysis and use the copper ore concentrates ore pulp.(staple is a protein with gelatin under stirring; What the gelatin that experiment is adopted was that Dongguan municipal administration industry gelatin ltd produces is the technical gelatine that feed purification obtains with gelatine and hide glue) mix with trolamine (analytical pure); Obtain combined dispersion agent, the weight ratio of trolamine and gelatin is 3:1.Add the electrolysis that obtains to the anode electrolytic cell district with the copper ore concentrates ore pulp; With the cathodic area that the combined dispersion agent that obtains adds the in-pulp electrolysis groove to, the add-on of combined dispersion agent is confirmed according to the ratio that Powdered copper ore concentrates per ton adds the combined dispersion agent of 1500g.Carry out the electrolytic preparation superfine cupper powder then, during electrolysis, the distance between anode and the negative electrode is 4.5cm, and voltage is 5V, and current density is 250A/m
2, it is 70 ℃ that the electrolysis temperature of copper ore concentrates ore pulp is used in whole electrolysis, electrolysis time is 3.5h.Adopt the manual powder of scraping in the preparation process, at a distance from 3min the copper powder on the negative electrode is scraped in the product scoop with hairbrush is every.
The combined dispersion agent (gelatin+trolamine) that above-mentioned enforcement is adopted at consumption not simultaneously, the meso-position radius d of obtained copper powder
50, volume mean diameter d
v, area average diameter d
sS is as shown in table 3 with specific surface area:
Table 3
| Combined dispersant dosage (g/t) | Meso-position radius d 50(μm) | Volume mean diameter d v(μm) | Area average diameter d s(μm) | Specific surface area s (m 2/g) |
| 0.0 | 8.09 | 8.95 | 4.81 | 1.25 |
| 500 | 4.32 | 4.97 | 3.98 | 1.84 |
| 1000 | 2.95 | 3.01 | 2.37 | 3.85 |
| 1500 | 1.89 | 2.05 | 1.75 | 4.16 |
| 2000 | 2.31 | 2.23 | 2.10 | 3.16 |
The consumption that the data declaration of table 3 adopts combined dispersion agent (gelatin+trolamine) not simultaneously, dispersion effect is different.The optimum amount of combined dispersion agent is that copper ore concentrates per ton uses 1500g.When consumption during less than optimum value, dispersion effect is bad; When consumption surpassed optimum value, the granularity of obtained copper powder became greatly, specific surface area reduces, and produces agglomeration.According to the difference of raw material, the optimum amount of combined dispersion agent needs to be confirmed by experiment.
The foregoing description when adopting dissimilar dispersion agents and not adopting dispersion agent, the meso-position radius d of obtained copper powder
50, volume mean diameter d
v, area average diameter d
sS is as shown in table 4 with specific surface area:
Table 4
| The dispersion agent type | Meso-position radius d 50(μm) | Volume mean diameter d v(μm) | Area average diameter d s(μm) | Specific surface area s (m 2/g) |
| Combined (gelatin+trolamine) | 1.89 | 2.05 | 1.75 | 4.16 |
| Gelatin | 5.82 | 6.69 | 3.09 | 1.92 |
| Water glass | 2.45 | 2.44 | 2.16 | 2.77 |
| Sodium hexametaphosphate 99 | 2.50 | 2.46 | 2.40 | 2.50 |
| Trolamine | 2.31 | 2.37 | 2.20 | 2.91 |
| No dispersion agent | 8.09 | 8.95 | 4.81 | 1.25 |
The data declaration of table 4 adopt combined dispersion agent (gelatin+trolamine) to compare with adopting single dispersion agent, the copper powder fine size, the specific surface area that are obtained are big, its dispersion effect is better.
Claims (4)
1. a superfine cupper powder prepares pre-treatment and dispersive method, it is characterized in that having following steps:
1. pre-treatment: with copper content is that 20wt%～30wt%, the abundance of granularity between 15～246 μ m are put into the high-energy stirring ball mill machine at the pulverous copper ore concentrates more than 90%; Add an amount of water in the stirring; Add an amount of NaCl and Hydrogen chloride again and carry out stirring ball-milling; The add-on of wherein said water is 2～4 times of pulverous copper ore concentrates weight; Said NaCl adds according to the ratio that pulverous copper ore concentrates per ton adds the NaCl of 490kg, and said Hydrogen chloride is that concentration is the HCL aqueous solution of 8wt%～12 wt%, and the add-on of Hydrogen chloride makes that pH is 4 ~ 5; Along with constantly carrying out of stirring ball-milling, and copper ore concentrates is carried out activation and reagent removal, obtain pre-treatment copper ore concentrates ore pulp;
2. the pre-treatment copper ore concentrates ore pulp that in stirring 1. step is obtained mixes with an amount of Hydrogen chloride and water and obtains solid-liquid mixing system; In the mixing; Cupric ion in the pre-treatment copper ore concentrates ore pulp dissolves in the liquid of solid-liquid mixing system; Said Hydrogen chloride is that concentration is the HCL aqueous solution of 8wt%～12 wt%, and the Hydrogen chloride that is added and the weight of water are 8～12 times of weight of pulverous copper ore concentrates, and the pH of solid-liquid mixing system is 1～1.5; Add the ratio of the NaCl of 450 ~ 550kg then according to Powdered copper ore concentrates per ton, under agitation NaCl is added in the above-mentioned solid-liquid mixing system and mix, obtain electrolysis and use the copper ore concentrates ore pulp;
3. prepare combined dispersion agent: stir down gelatin is mixed with trolamine, obtain combined dispersion agent, the weight ratio of trolamine and gelatin is 2～4: 1;
4. the electrolysis that 2. step is obtained is added the anode electrolytic cell district to the copper ore concentrates ore pulp, the cathodic area that the combined dispersion agent that 3. step is obtained adds electrolyzer to; The add-on of combined dispersion agent is confirmed according to the ratio that Powdered copper ore concentrates per ton adds the combined dispersion agent of 1000～2000g;
5. electrolytic preparation superfine cupper powder: during electrolysis, the distance between anode and the negative electrode is 4 cm ~ 5cm, and current density is 250 A/m
2~ 350A/m
2, it is 70 ℃ ~ 80 ℃ that the temperature of copper ore concentrates ore pulp is used in whole electrolysis, adopts hairbrush manually to scrape powder the copper powder on the negative electrode is scraped in the product scoop.
2. prepare pre-treatment and dispersive method according to the described superfine cupper powder of claim 1; It is characterized in that: step 1. in; When carrying out stirring ball-milling; The weight ratio of steel ball weight and pulverous copper ore concentrates is 3～5: 1, and steel ball size is 3～5mm, and soak time is to be 0.5～1.5h the agitation grinding time.
3. prepare pre-treatment and dispersive method according to the described superfine cupper powder of claim 1, it is characterized in that: step 5. in, said electrolysis time is 2h ~ 4h, scraping the powder timed interval is 3 min ~ 5min.
4. prepare pre-treatment and dispersive method according to the described superfine cupper powder of claim 1, it is characterized in that: step 3. in used gelatin be technical gelatine.
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| CN102628172B (en) * | 2012-04-24 | 2015-07-22 | 天华化工机械及自动化研究设计院有限公司 | Device for scraping sponge copper |
| CN103451424B (en) * | 2013-06-04 | 2015-06-10 | 兰州大学 | Method for improving filtration velocity of ore dissolution liquid |
| CN103865482B (en) * | 2014-03-25 | 2015-08-19 | 成都金汇能科技有限责任公司 | Mineral grinding aid and application thereof |
| CN104087971B (en) * | 2014-07-11 | 2016-11-23 | 北京矿冶研究总院 | Method for treating lead matte |
| CN106009417A (en) * | 2016-07-29 | 2016-10-12 | 苏州荣昌复合材料有限公司 | Preparation method of bronze hard PVC door/window profiled bar |
| CN110640162A (en) * | 2019-10-08 | 2020-01-03 | 三峡大学 | Method for preparing, pretreating and dispersing superfine copper powder |
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| MX2007002330A (en) * | 2004-08-23 | 2007-10-08 | Univ James Cook | Process for copper electrowinning and electrorefining. |
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| 刘维平等.分散剂对由矿浆电解铜粉分散性能的影响.《粉末冶金工业》.2009,第19卷(第01期),27-31. * |
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