CN1242850C - Multiple step flotation technique for raising rate of reclaiming silver in plumbum - Google Patents
Multiple step flotation technique for raising rate of reclaiming silver in plumbum Download PDFInfo
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- CN1242850C CN1242850C CN 200410014571 CN200410014571A CN1242850C CN 1242850 C CN1242850 C CN 1242850C CN 200410014571 CN200410014571 CN 200410014571 CN 200410014571 A CN200410014571 A CN 200410014571A CN 1242850 C CN1242850 C CN 1242850C
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Abstract
The present invention relates to flotation technology for raising the recovery rate of silver in a beneficiation technique. The present invention solves the problem that the recovery rate of the silver in the prior art is lower or when the recovery rate of the silver is raised, the main grade of a lead concentrate is lowered. The step floatation technology for raising the recovery rate of the silver in lead of the present invention comprises a quick floatation step before a lead selection step; in the quick floatation step, objective minerals of silver and lead are separated out. In the step floatation technology, in the process of quick floatation of the silver and the lead, the pH value of pulp is best to be between 10.0 and 12 and preferred to be between 10.5 and 11.2; in the process of floatation of the lead, the pH value of the pulp is best to be between 11.0 and 12.7 and preferred to be between 12.2 and 12.5. The present invention provides the flotation technology for raising the recovery rate of associated silver in lead zinc sulfide ore, and the flotation technology has good lead and silver ore dressing indexes, high economic benefit and easy control. The present invention is also suitable for the recovery of multi-metal sulfide ore silver comprising associated and independent silver minerals.
Description
Technical field
The present invention relates to the technology that a kind of floatation process that improves silver raising recovery rate, particularly flotation in the technique of preparing contain the lead zinc sulphur ore of association independent silver deposit thing.
Background technology
Silver is a kind of noble metal, and associated silver is the important source of silver in the lead.At present, domestic and international separation method to the argentiferous lead zinc vulcanizing mine is to reclaim simultaneously with lead.Because the occurrence status of silver mineral is different and silver is inconsistent with plumbous best flotation current potential, enter in the lead concentrate with the recovery of the part silver mineral of plumbous symbiosis along with lead, but monomer dissociation silver mineral for the independent association of part, because silver is inconsistent with plumbous best flotation current potential, silver (under high-alkali condition) when electronegative potential is subjected to the lime rejection ratio stronger, be difficult to enter into lead concentrate, cause the rate of recovery of silver in the lead concentrate lower, had a strong impact on the silver-colored rate of recovery and improved; Also there is the part mine to adopt suitably to reduce and selects plumbous index, lead concentrate grade particularly, suitably take into account the recovery of silver, but the reduction of lead concentrate quality makes again and contains the zinc increase in the lead, zinc, lead recovery and lead concentrate master grade all are subjected to bigger influence, still have influence on the raising of overall mineral processing index of plumbous zinc-silver and benefit, caused very big waste for limited argentalium zinc resource.
Summary of the invention
The technical problem to be solved in the present invention is exactly existing floatation process, though the lower or silver-colored rate of recovery of the rate of recovery of silver has improved, but the problem that lead concentrate master grade descends again the invention provides that the silver-colored mineral processing index of a kind of lead is all good simultaneously, economic benefit is high, the floatation process of the manageable raising lead zinc sulphur ore associated silver rate of recovery.
The stepped-flotation separation technology of silver raising recovery rate in the raising lead of the present invention is to have one to select step soon before selecting plumbous step, in this step, with purpose mineral silver, plumbous emersion; In selecting plumbous step, pulp PH value is 11.2-12.7.
Above described stepped-flotation separation technology, in selecting the argentalium step soon, pulp PH value is preferably 10.0-12, preferred 10.5-11.2.
Above described stepped-flotation separation technology, in the plumbous step of described choosing, the preferred 12.2-12.5 of pulp PH value.
In above-mentioned each technology, selecting soon in the step, the collecting agent of adding can be the aniline black powder, sulphur nitrogen, and perhaps the nigrosine medicine is main, sulphur nitrogen is auxilliary.
The present invention is according to silver and lead, zinc, the difference of the best flotation pH value of sulphur iron, in grinding machine, add an amount of lime pulp PH value is controlled at 10.5-11.2, the better plumbous floatability of silver-colored floatability this moment is general, zinc sulphur floatability is relatively poor, adding with the aniline black powder in grinding machine simultaneously is that main sulphur nitrogen is the hybrid collector of assisting, utilization is in low alkali condition, silver raising recovery rate is higher in the better lead of aniline black powder selectivity, with diethyldithiocarbamate to plumbous collecting characteristics preferably, fast lead concentrate is advanced in the silver and the well plumbous choosing of a part of floatability of monomer, regulate the pH value of ore pulp to 12.2-12.5 with lime again, with adding with diethyldithiocarbamate is that main butyl xanthate is the remaining lead of hybrid collector flotation and the part silver of assisting, it is simultaneously all high to reach plumbous silver raising recovery rate like this, and lead concentrate master grade is good again, contains the low again purpose of zinc, the plumbous silver-colored process of whole choosing is finished in two steps, realized under the different PH plumbous, effective come-up of silver, silver raising recovery rate significantly improves in the lead under not reducing the prerequisite of selecting plumbous index, has improved economic benefit.The present invention is applicable to that too other contains the recovery of the multi-metal sulfide silver of association independent silver deposit thing.
Description of drawings
Fig. 1 is the schematic diagram of the stepped-flotation separation technology of an embodiment of the present invention
The specific embodiment
The raw ore that following example one, two, three sorts is one to contain the lead zinc sulphur ore of symbiosis and independent silver deposit thing, account for 30% with the silver mineral of plumbous symbiosis, the independent silver deposit thing accounts for 35%, other and zinc, the symbiosis of sulphur iron, its head grade is: Pb4.50%, Zn9.42%, S26.80%, Ag131g/t.
Example one:
According to technology shown in Figure 1 ball milling add different amounts lime and 40g/t be that main sulphur nitrogen is the hybrid collector of assisting with the aniline black powder, mog-200 order is 75%, add foaming agent 20g/t, fast a part of floatability silver well plumbous and monomer is selected into lead concentrate, adding 30g/t again is that main butyl xanthate is the hybrid collector of assisting with diethyldithiocarbamate, add foaming agent 20g/t, remaining lead of flotation and part silver, closed circuit sorting the results are shown in Table one:
Table one:
| Lime consumption Kg/t | 0 | 1.5 | 3.6 | 5 | 9 |
| PH value | 7 | 11.0 | 12.2 | 12.4 | 12.7 |
| Lead recovery (%) | 89.86 | 91.72 | 92.18 | 92.41 | 92.50 |
| Lead concentrate grade (%) | 27.90 | 50.42 | 62.82 | 63.83 | 64.11 |
| Silver raising recovery rate in the lead (%) | 73.01 | 70.75 | 45.80 | 35.92 | 35.40 |
| Lead concentrate contains zinc grade (%) | 16.96 | 8.45 | 6.13 | 5.25 | 3.89 |
| Lead concentrate sulfur-bearing grade (%) | 25.14 | 20.72 | 18.76 | 18.38 | 18.12 |
Example two:
Is that main sulphur nitrogen be the hybrid collector of assisting at lime and the 40g/t that ball milling adds 1.5kg/t with the aniline black powder according to technology shown in Figure 1, mog-200 order is 75%, ore pulp PH is 11, corresponding pulp potential is 260mv, add foaming agent 20g/t, fast a part of floatability silver well plumbous and monomer is selected into lead concentrate, regulate the PH of ore pulp again with a certain amount of lime, adding 30g/t again is that main butyl xanthate is the hybrid collector of assisting with diethyldithiocarbamate, add foaming agent 20kg/t, remaining lead of flotation and part silver, closed circuit sorting the results are shown in Table two:
Table two:
| Ore grinding lime consumption Kg/t | 0 | 1.5 | 1.5 | 1.5 | 1.5 |
| Lead selects pH value soon | 7 | 11 | 11 | 11 | 11 |
| Select plumbous lime consumption Kg/t | 0 | 0 | 2.1 | 3.5 | 7.5 |
| Electric potential regulating selects plumbous pH value | 7 | 11.2 | 12.2 | 12.4 | 12.7 |
| Lead recovery (%) | 89.86 | 91.72 | 92.18 | 92.39 | 92.36 |
| Lead concentrate grade (%) | 27.90 | 62.42 | 65.82 | 67.83 | 68.21 |
| Silver raising recovery rate in the lead (%) | 73.01 | 67.75 | 63.42 | 63.12 | 60.33 |
| Lead concentrate contains zinc grade (%) | 16.96 | 7.51 | 5.33 | 4.25 | 3.85 |
| Lead concentrate sulfur-bearing grade (%) | 25.14 | 19.32 | 18.56 | 18.31 | 18.22 |
It is simultaneously all high to reach plumbous silver raising recovery rate like this, and lead concentrate master grade is good again, contains the low again purpose of zinc, the plumbous silver-colored process of whole choosing is finished in two steps, realized plumbous, the silver-colored down effective come-up of different potentials, silver raising recovery rate significantly improves in the lead under not reducing the prerequisite of selecting plumbous index, has improved economic benefit.Be applicable to that too other contains the recovery of the multi-metal sulfide silver of association independent silver deposit thing.
Example three:
Add the lime of 1.5kg/t and the collecting agent of the different proportionings of 40g/t according to technology shown in Figure 1 at ball milling, mog-200 order is 75%, ore pulp PH is 11, add foaming agent 20g/t, fast a part of floatability silver well plumbous and monomer is selected into lead concentrate, again with the lime that adds 3.5kg/t, regulate the PH to 12.4 of ore pulp, corresponding pulp potential is 170mv, adding 30g/t sulphur nitrogen again is that main butyl xanthate is the collecting agent of assisting, add foaming agent 20kg/t, remaining lead of flotation and part silver, closed circuit sorting the results are shown in Table three:
Table three:
| Select plumbous collecting agent proportioning soon | The aniline black powder | Sulphur nitrogen | The aniline black powder is the main sulphur nitrogen that adds | The aniline black powder is the main butyl ammonium aerofloat that adds | Sulphur nitrogen is the main butyl xanthate that adds |
| Lead recovery (%) | 91.39 | 92.79 | 92.39 | 89.39 | 93.39 |
| Lead concentrate grade (%) | 68.83 | 66.83 | 67.83 | 63.83 | 61.83 |
| Silver raising recovery rate in the lead (%) | 63.42 | 60.12 | 63.12 | 64.12 | 61.12 |
| Lead concentrate contains zinc grade (%) | 4.15 | 4.45 | 4.25 | 5.25 | 5.65 |
| Lead concentrate sulfur-bearing grade (%) | 18.11 | 18.51 | 18.31 | 18.61 | 18.71 |
Example four:
Sort with different grade raw ores, is that main sulphur nitrogen is the collecting agent of assisting according to technology shown in Figure 1 at lime and the 40g/t aniline black powder that ball milling adds 1.5kg/t, and mog-200 order is 75%, and ore pulp PH is 11, carry out flow test, add foaming agent 40g/t,, regulate the PH to 12.4 of ore pulp again with the lime that adds 3.5kg/t, adding 30g/t sulphur nitrogen again is that main butyl xanthate is the collecting agent of assisting, add foaming agent 20kg/t, remaining lead of flotation and part silver, closed circuit sorting the results are shown in Table four:
Table four:
| Raw ore | Plumbous zinc ore crude one | Plumbous zinc ore crude two | Plumbous zinc ore crude three | |||||||||
| Pb | Zn | S | Ag | Pb | Zn | S | Ag | Pb | Zn | S | Ag | |
| Head grade | 4.50 | 9.42 | 26.80 | 131 | 2.35 | 5.63 | 27.21 | 110 | 6.82 | 15.32 | 28.35 | 168 |
| The lead concentrate grade | 67.39 | 4.25 | 18.31 | 1340 | 62.30 | 4.32 | 18.45 | 1950 | 70.45 | 4.22 | 18.33 | 1294 |
| Plumbous silver raising recovery rate | 92.39 | 63.12 | 89.78 | 60.05 | 94.55 | 70.52 | ||||||
Example one, two, three all is to adopt in the described technology of invention, promptly in grinding machine, add an amount of lime with pulp PH value 10.5-11.2, adding with the aniline black powder in grinding machine simultaneously is that main sulphur nitrogen is the hybrid collector of assisting, utilization is when low alkali high potential, aniline black powder selectivity is better, higher and the diethyldithiocarbamate of silver raising recovery rate is to plumbous collecting characteristics preferably in the lead, fast a part of floatability silver well plumbous and monomer is selected into lead concentrate, regulate the pH value 11.2-12.7 of ore pulp again with lime, with adding with diethyldithiocarbamate is that main butyl xanthate is the hybrid collector remaining lead of flotation and part silver under electronegative potential of assisting, it is simultaneously all high to reach plumbous silver raising recovery rate like this, lead concentrate master grade is good again, contains the low again purpose of zinc.
Example four adopts the raw ore to different grades of the present invention to sort, lead concentrate index and silver raising recovery rate index have preferably all been obtained, and it is lower to contain zinc in the lead, realized plumbous, the silver-colored down effective come-up of different potentials, silver raising recovery rate significantly improves in the lead under not reducing the prerequisite of selecting plumbous index, has improved economic benefit.
Claims (7)
1. the stepped-flotation separation technology of silver raising recovery rate in the raising lead is characterized in that: have one to select step soon before selecting plumbous step, in this step, with purpose mineral silver, plumbous emersion; In selecting plumbous step, pulp PH value is 11.2-12.7.
2. the stepped-flotation separation technology of silver raising recovery rate in the raising lead according to claim 1 is characterized in that: selecting soon in the step, pulp PH value is 10.0-12.0.
3. the stepped-flotation separation technology of silver raising recovery rate in the raising lead according to claim 2 is characterized in that: selecting soon in the step, pulp PH value is 10.5-11.2.
4. the stepped-flotation separation technology of silver raising recovery rate in the raising lead according to claim 1 is characterized in that: in selecting plumbous step, pulp PH value is 12.2-12.5.
5. according to the stepped-flotation separation technology of silver raising recovery rate in the described arbitrary raising lead of claim 1-4, it is characterized in that: selecting soon in the step, the collecting agent of adding is the aniline black powder.
6. according to the stepped-flotation separation technology of silver raising recovery rate in the described arbitrary raising lead of claim 1-4, it is characterized in that: selecting soon in the step, the collecting agent of adding is a sulphur nitrogen.
7. according to the stepped-flotation separation technology of silver raising recovery rate in the described arbitrary raising lead of claim 1-4, it is characterized in that: selecting soon in the step, the collecting agent of adding is main for the aniline black powder, and sulphur nitrogen is auxilliary.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410014571 CN1242850C (en) | 2004-04-06 | 2004-04-06 | Multiple step flotation technique for raising rate of reclaiming silver in plumbum |
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| CN 200410014571 CN1242850C (en) | 2004-04-06 | 2004-04-06 | Multiple step flotation technique for raising rate of reclaiming silver in plumbum |
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| CN1242850C true CN1242850C (en) | 2006-02-22 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125311B (en) * | 2007-09-24 | 2010-09-01 | 昆明理工大学 | Vulcanizing-flotation combing method for treating zinc kiln slag |
| CN101850306B (en) * | 2010-05-29 | 2012-09-19 | 山东黄金矿业（玲珑）有限公司 | Method for increasing floatation recovery rate by improving floatation technique |
| CN104624388A (en) * | 2013-11-13 | 2015-05-20 | 甘肃中盛矿业有限责任公司 | Agent improvement method used in silver and zinc compound ore flotation process |
| CN103769294B (en) * | 2014-01-16 | 2015-09-30 | 洛阳理工学院 | A kind of method improving silver, lead recovery in silver floatation lead concentrate |
| CN104689923B (en) * | 2015-02-10 | 2017-06-16 | 江西理工大学 | A kind of method that silver is reclaimed in the peracid zinc leaching residue from high temperature |
| CN107282311A (en) * | 2017-05-23 | 2017-10-24 | 西北矿冶研究院 | Lead-silver ore flotation process |
| CN107774456A (en) * | 2017-11-12 | 2018-03-09 | 南京银茂铅锌矿业有限公司 | Post machine joint is segmented asynchronous coarse concentrate regrinding and selects lead method |
| CN109622235A (en) * | 2018-12-06 | 2019-04-16 | 贵州省新材料研究开发基地 | A kind of zinc leaching residue wet-leaching lead, silver-colored waste residue recycle copper collecting solution |
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Owner name: NANJING YINGMAO LEAD + ZINC MINING CO., LTD. Free format text: FORMER OWNER: XINYANG MINING IND CO., LTD., XIXIASHAN, NANJING Effective date: 20090710 |
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Effective date of registration: 20090710 Address after: No. 81, Qixia street, Qixia District, Jiangsu, Nanjing Patentee after: Nanjing Yinmao Lead-zinc Mine Co., Ltd. Address before: No. 81, Qixia street, Qixia District, Jiangsu, Nanjing Patentee before: Xinyang Mining Ind Co., Ltd., Xixiashan, Nanjing |
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Granted publication date: 20060222 Termination date: 20130406 |