CN110787911A - Flotation method for low-grade copper ore and associated gold and silver - Google Patents
Flotation method for low-grade copper ore and associated gold and silver Download PDFInfo
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 77
- 239000010949 copper Substances 0.000 title claims abstract description 77
- 238000005188 flotation Methods 0.000 title claims abstract description 55
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 30
- 239000010931 gold Substances 0.000 title claims abstract description 30
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 30
- 239000004332 silver Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000012141 concentrate Substances 0.000 claims abstract description 64
- 239000006260 foam Substances 0.000 claims abstract description 56
- 238000000926 separation method Methods 0.000 claims abstract description 27
- 238000010408 sweeping Methods 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims description 40
- 239000004088 foaming agent Substances 0.000 claims description 35
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 27
- 238000001238 wet grinding Methods 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 5
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 5
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 5
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- 230000002000 scavenging effect Effects 0.000 claims description 3
- CETBSQOFQKLHHZ-UHFFFAOYSA-N Diethyl disulfide Chemical compound CCSSCC CETBSQOFQKLHHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical group CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims 2
- 238000011084 recovery Methods 0.000 abstract description 27
- 229910001779 copper mineral Inorganic materials 0.000 abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 description 5
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 5
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 5
- SJWFXCIHNDVPSH-UHFFFAOYSA-N octan-2-ol Chemical compound CCCCCCC(C)O SJWFXCIHNDVPSH-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052947 chalcocite Inorganic materials 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052951 chalcopyrite Inorganic materials 0.000 description 2
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052569 sulfide mineral Inorganic materials 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 241000907663 Siproeta stelenes Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 229910052948 bornite Inorganic materials 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- LJSQFQKUNVCTIA-UHFFFAOYSA-N diethyl sulfide Chemical compound CCSCC LJSQFQKUNVCTIA-UHFFFAOYSA-N 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- MIHRVCSSMAGKNH-UHFFFAOYSA-M n-ethylcarbamodithioate Chemical compound CCNC([S-])=S MIHRVCSSMAGKNH-UHFFFAOYSA-M 0.000 description 1
- YFLLTMUVNFGTIW-UHFFFAOYSA-N nickel;sulfanylidenecopper Chemical compound [Ni].[Cu]=S YFLLTMUVNFGTIW-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003451 thiazide diuretic agent Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/08—Subsequent treatment of concentrated product
- B03D1/082—Subsequent treatment of concentrated product of the froth product, e.g. washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/08—Subsequent treatment of concentrated product
- B03D1/087—Subsequent treatment of concentrated product of the sediment, e.g. regrinding
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
本发明公开了一种低品位铜矿石及其伴生金银的浮选方法，首先将伴生金银的低品位铜矿石进行湿磨，然后分为两组等量的矿浆，先对第一组矿浆进行分段粗选，获得粗精矿和尾矿两个产品，然后将第一组的粗精矿与第二组矿浆合并，再对合并后的矿浆进行两次粗选分离和扫选分离，获得浮选泡沫和尾矿两个产品，将第一组矿浆浮选的尾矿和合并后的矿浆浮选尾矿合并作为最终尾矿，本发明充分发挥了组合药剂的正协同效应，提高了粗粒、连生体和微细粒铜矿物的回收率；选择性降低了脉石可浮性，提高了铜精矿品位和伴生金银在铜精矿中的含量及回收率，增加了铜精矿中的计价元素。
The invention discloses a flotation method for low-grade copper ore and its associated gold and silver. The group of pulp is subjected to staged roughing to obtain two products of rough concentrate and tailings, and then the first group of rough concentrate is combined with the second group of pulp, and the combined pulp is subjected to two rough separation and sweeping selection. Separation, two products of flotation foam and tailings are obtained, and the tailings of the first group of pulp flotation and the merged tailings of pulp flotation are combined as the final tailings. Improve the recovery rate of coarse-grained, conjoined and fine-grained copper minerals; selectively reduce the floatability of gangue, improve the grade of copper concentrate and the content and recovery rate of associated gold and silver in copper concentrate, and increase the Valuation elements in copper concentrates.
Description
技术领域technical field
本发明涉及一种低品位铜矿石及其伴生金银的浮选方法，属于冶金选矿技术领域。The invention relates to a flotation method for low-grade copper ore and its associated gold and silver, belonging to the technical field of metallurgical beneficiation.
背景技术Background technique
铜广泛应用于军工、电力、通讯、交通、运输、轻工、建筑、机械等行业。目前已知的铜矿物有200余种，其中具有工业应用价值的铜矿物有17种。根据矿床形成的地质条件和成矿模式，铜矿床主要类型可分为斑岩、矽卡岩、层状、含铜黄铁矿、铜镍硫化矿、脉状及自然铜等类型。根据生成条件和化学成分不同，铜矿物可分为：原生硫化铜矿物，如黄铜矿；次生硫化铜矿物，如辉铜矿；氧化铜矿物，如孔雀石；自然铜等。Copper is widely used in military, electric power, communications, transportation, transportation, light industry, construction, machinery and other industries. There are more than 200 known copper minerals, of which there are 17 copper minerals with industrial application value. According to the geological conditions and metallogenic model of the deposit formation, the main types of copper deposits can be divided into porphyry, skarn, layered, copper-bearing pyrite, copper-nickel sulfide ore, vein and natural copper. According to different formation conditions and chemical compositions, copper minerals can be divided into: primary copper sulfide minerals, such as chalcopyrite; secondary copper sulfide minerals, such as chalcocite; copper oxide minerals, such as malachite; natural copper, etc. .
据美国地质调查局估计，2018年世界陆地已发现铜资源量21亿吨（斑岩型铜矿18亿吨），潜在铜资源量35亿吨，世界铜储量8.3亿吨。铜储量约一半集中在美洲地区，美国、墨西哥、智利、秘鲁四国铜矿储量约占全球一半。同时，环太平洋其它地区、非洲和亚洲等地区的铜矿资源大幅增长，尤其是澳大利亚、刚果、赞比亚、俄罗斯、印尼等国家铜矿储量增长较快。According to estimates by the US Geological Survey, in 2018, 2.1 billion tons of copper resources have been discovered on land (1.8 billion tons of porphyry copper mines), 3.5 billion tons of potential copper resources, and 830 million tons of copper reserves in the world. About half of the copper reserves are concentrated in the Americas, and the United States, Mexico, Chile, and Peru account for about half of the world's copper reserves. At the same time, copper resources in other parts of the Pacific Rim, Africa and Asia have grown substantially, especially in countries such as Australia, Congo, Zambia, Russia, and Indonesia.
据我国国土资源部统计，截至2017年，中国的铜矿储量达到了1.06亿金属吨，比1978年增长了210.45%，新增查明铜资源储量418.11万吨。中国铜矿主要分布在江西、云南、湖北、西藏、甘肃、安徽、山西、内蒙古、黑龙江等省区，这9个省区的基础储量约占全国总基础储量的80%以上。而在我国已探明的铜矿资源当中，硫化铜矿具有品位低，性质复杂等特点。例如江西德兴铜矿、云南大红山铜矿的地质品位0.4%左右。其矿石中铜矿物种类多，结构复杂，主要是黄铜矿，少量辉铜矿、斑铜矿、蓝辉铜矿、赤铜矿、自然铜等；脉石矿物主要是石英、黑云母、白云母、白云石、方解石及碳质等。这类矿石普遍具有有用元素含量低，有用矿物结构复杂的特点。这些原矿性质给浮选分离和回收利用带来了较大难度。According to statistics from the Ministry of Land and Resources of my country, as of 2017, China's copper mine reserves reached 106 million metal tons, an increase of 210.45% over 1978, and the newly identified copper resource reserves were 4.1811 million tons. China's copper mines are mainly distributed in Jiangxi, Yunnan, Hubei, Tibet, Gansu, Anhui, Shanxi, Inner Mongolia, Heilongjiang and other provinces. The basic reserves of these nine provinces account for more than 80% of the country's total basic reserves. Among the proven copper ore resources in my country, copper sulfide ore has the characteristics of low grade and complex nature. For example, Jiangxi Dexing Copper Mine and Yunnan Dahongshan Copper Mine have a geological grade of about 0.4%. There are many kinds of copper minerals in the ore with complex structure, mainly chalcopyrite, a small amount of chalcocite, bornite, blue chalcocite, cuprite, natural copper, etc.; gangue minerals are mainly quartz, biotite, Muscovite, dolomite, calcite and carbonaceous, etc. Such ores generally have the characteristics of low content of useful elements and complex structure of useful minerals. The properties of these raw ore bring great difficulty to flotation separation and recycling.
随着我国工业化和信息化进程的快速发展和推进，对铜的消费需求急剧膨胀。2017年，中国十种有色金属的消量位居全球首位，其中精炼铜888.9万吨，增长7.7%。目前我国可供工业开采和利用的铜矿资源严重短缺，每年需要进口大量的铜精矿和废杂铜。一方面，我国铜资源短缺，含铜富矿日益减少，另一方面我国已探明的铜矿资源中，绝大部分低品位难处理铜矿，因缺乏高效开发和利用新技术，未能得到很好的利用。低品位铜矿石一般具有含铜品位低、伴生金银含量极低、铜矿物种类多和结构复杂等特点，其常规浮选指标低，金、银在铜精矿中达到计价含量困难，能耗高。因此，研发一种处理该类铜矿石的高效利用新技术意义重大。With the rapid development and advancement of my country's industrialization and informatization, the consumer demand for copper has expanded rapidly. In 2017, China's consumption of ten non-ferrous metals ranked first in the world, of which refined copper was 8.889 million tons, an increase of 7.7%. At present, there is a serious shortage of copper ore resources available for industrial mining and utilization in my country, and a large amount of copper concentrate and scrap copper needs to be imported every year. On the one hand, there is a shortage of copper resources in my country, and copper-bearing rich mines are decreasing day by day. Good use. Low-grade copper ore generally has the characteristics of low copper-containing grade, extremely low content of associated gold and silver, many types of copper minerals and complex structure. High energy consumption. Therefore, it is of great significance to develop a new technology for efficient utilization of such copper ore.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种低品位铜矿石及其伴生金银的浮选方法，本发明通过“原浆活化-载体背负-细粒团聚-选择抑制与分散-耦合协同捕收”的技术路线，充分发挥了组合药剂的正协同效，提高了粗粒、连生体和微细粒铜矿物的回收率，选择性降低了脉石可浮性，提高了铜精矿品位和伴生金银在铜精矿中的含量及回收率，增加了铜精矿中的计价元素。The purpose of the present invention is to provide a flotation method for low-grade copper ore and its associated gold and silver. Route, give full play to the positive synergistic effect of combination agents, improve the recovery rate of coarse-grained, conjoined and fine-grained copper minerals, selectively reduce gangue floatability, improve copper concentrate grade and associated gold and silver The content and recovery rate of copper concentrate increase the value element in copper concentrate.
本发明的技术方案如下：首先将伴生金银的低品位铜矿石进行湿磨，然后分为两组等量的矿浆，先对第一组矿浆进行分段粗选，获得粗精矿和尾矿两个产品，然后将第一组的粗精矿与第二组矿浆合并，对合并后的矿浆进行两次粗选分离和扫选分离，获得浮选泡沫和尾矿两个产品，将第一组矿浆浮选的尾矿和合并后的矿浆浮选尾矿合并作为最终尾矿，对浮选泡沫进行三次精选获得精选泡沫，最终的浮选泡沫即为铜精矿。The technical scheme of the present invention is as follows: firstly, wet-grinding the low-grade copper ore associated with gold and silver is carried out, and then divided into two groups of ore pulps of equal amount, firstly, the first group of ore pulps are subjected to segmental roughing to obtain coarse concentrates and tailings. Then, the first group of coarse concentrate and the second group of pulp are combined, and the combined pulp is subjected to two rough separation and sweep separation to obtain two products of flotation foam and tailings. A group of pulp flotation tailings and the combined pulp flotation tailings are combined as the final tailings, and the flotation froth is selected three times to obtain the selected froth, and the final flotation froth is the copper concentrate.
本低品位铜矿石及其伴生金银的浮选方法，具体步骤如下：The flotation method of this low-grade copper ore and its associated gold and silver, the specific steps are as follows:
（1）将伴生金银的低品位铜矿石进行湿磨，磨矿至以质量计粒度小于0.074mm占70~90%，然后调节矿浆的质量浓度为35～40%，将矿浆分成等量的两组，首先向第一组矿浆中添加70～90g/t组合捕收剂SYD、8～12g/t起泡剂Z-9，搅拌2～4分钟，进行第一次粗选，得到第一次粗选精矿和第一次粗选尾矿，向第一次粗选尾矿中添加30～50g/t组合捕收剂SYD、4～6g/t起泡剂Z-9，搅拌2～4分钟，进行第二次粗选，得到第二次粗选精矿和第二次粗选尾矿，向第二次粗选尾矿中添加15～25g/t组合捕收剂SYD、4～6g/t起泡剂Z-9，搅拌2～4分钟，进行扫选得到扫选精矿和第一组扫选尾矿，将第一次粗选精矿、第二次粗选精矿和扫选精矿混合后再与第二组矿浆合并；(1) Wet grinding the low-grade copper ore associated with gold and silver until the particle size by mass is less than 0.074mm, accounting for 70-90%, then adjust the mass concentration of the pulp to 35-40%, and divide the pulp into equal parts two groups, firstly add 70-90g/t combined collector SYD and 8-12g/t foaming agent Z-9 to the first group of pulp, stir for 2-4 minutes, carry out the first roughing, and obtain the first For the first roughing concentrate and the first roughing tailings, add 30-50g/t combined collector SYD and 4-6g/t foaming agent Z-9 to the first roughing tailings, stir for 2 ~4 minutes, carry out the second roughing to obtain the second roughing concentrate and the second roughing tailings, add 15-25g/t combined collectors SYD, 4 to the second roughing tailings ～6g/t foaming agent Z-9, stir for 2-4 minutes, carry out sweeping to obtain sweeping concentrate and the first group of sweeping tailings, the first roughing concentrate and the second roughing concentrate It is mixed with the scavenging concentrate and then combined with the second group of pulp;
（2）向步骤（1）合并后的矿浆中添加70～90g/t组合捕收剂SYD、8～12g/t起泡剂Z-9，搅拌2～4分钟，进行第一次粗选分离，获得第一次浮选泡沫和第一次槽内矿浆，然后向第一次槽内矿浆中添加30～50g/t组合捕收剂SYD、4～6g/t起泡剂Z-9，搅拌2～4分钟，进行第二次粗选分离，获得第二次浮选泡沫和第二次槽内矿浆，向第二次槽内矿浆中添加15～25g/t组合捕收剂SYD、4～6g/t起泡剂Z-9，搅拌2～4分钟，进行扫选分离，获得扫选浮选泡沫和第二组扫选尾矿，将步骤（1）的第一组扫选尾矿与第二组扫选尾矿合并作为最终尾矿；(2) Add 70-90g/t combined collector SYD and 8-12g/t foaming agent Z-9 to the combined pulp in step (1), stir for 2-4 minutes, and carry out the first rough separation , obtain the first flotation foam and the first pulp in the tank, then add 30-50g/t combined collector SYD and 4-6g/t foaming agent Z-9 to the first pulp in the tank, stir For 2 to 4 minutes, carry out the second rough separation to obtain the second flotation foam and the second pulp in the tank, and add 15 to 25 g/t of combined collectors SYD, 4 to 6g/t foaming agent Z-9, stir for 2 to 4 minutes, carry out sweep separation, obtain sweep flotation foam and second group sweep tailings, mix the first group sweep tailings in step (1) with The second group of sweeping tailings is combined as the final tailings;
（3）将步骤（2）的第一次浮选泡沫与第二次浮选泡沫合并，并调节矿浆的质量浓度为20~25%，然后向矿浆中添加80～120g/t组合调整剂FDQ，搅拌2～4分钟，进行第一次精选作业，得到第一次精选泡沫和第一次精选尾矿，第一次精选尾矿与步骤（2）的扫选浮选泡沫合并后返回第一次粗选分离，形成闭路循环，调节第一次精选泡沫的质量浓度为20~25%，然后添加40～60g/t组合调整剂FDQ，搅拌2～4分钟，进行第二次精选作业，得到第二次精选泡沫和第二次精选尾矿，第二次精选尾矿返回第一次精选作业中，形成闭路循环，将第二次精选泡沫进行第三次精选作业，得到第三次精选泡沫和第三次精选尾矿，将第三次精选尾矿返回第二次精选作业中，形成闭路循环，第三次精选泡沫即为最终的铜精矿。(3) Combine the first flotation froth and the second flotation froth in step (2), adjust the mass concentration of the pulp to 20-25%, and then add 80-120 g/t of combined modifier FDQ to the pulp , stir for 2 to 4 minutes, and perform the first selection operation to obtain the first selection foam and the first selection tailings, and the first selection tailings are combined with the sweeping flotation foam in step (2). Then return to the first rough separation to form a closed loop, adjust the mass concentration of the first selected foam to 20~25%, then add 40~60g/t of combined regulator FDQ, stir for 2~4 minutes, and carry out the second The second selection operation, the second selection foam and the second selection tailings are obtained, and the second selection tailings are returned to the first selection operation to form a closed loop, and the second selection foam is carried out for the first selection. Three selection operations, the third selection foam and the third selection tailings are obtained, and the third selection tailings are returned to the second selection operation to form a closed loop, and the third selection foam is for the final copper concentrate.
步骤（1）~步骤（3）中的组合捕收剂SYD为以下质量比的组分组合得到：乙硫氮20%～30%，Y89-3 50%～60%，异戊基黄10%～15%，丁铵黑药5%～10%所述起泡剂Z-9为仲辛醇。The combined collector SYD in steps (1) to (3) is obtained by combining the components in the following mass ratios: 20% to 30% of ethyl sulfide, 50% to 60% of Y89-3, and 10% of isopentyl yellow ～15%, butylammonium black medicine 5%～10%, the foaming agent Z-9 is sec-octanol.
步骤（3）中的组合调整剂FDQ为以下质量比的组分组合得到：木薯淀粉20%～30%，CMC（羧甲基纤维素钠）40%～60%，腐植酸钠20%～30%。The combination regulator FDQ in the step (3) is obtained by combining the components in the following mass ratios: 20% to 30% of tapioca starch, 40% to 60% of CMC (sodium carboxymethyl cellulose), and 20% to 30% of sodium humate. %.
本发明的特点是：The characteristics of the present invention are:
依据浮选药剂有机组合的耦合原理和载体浮选原理，充分发挥浮选药剂之间的正协同效应，强化粗粒和细粒浮选，提高浮选指标，降低消耗。本申请将原矿浆分为两组，由于将第一组粗选和扫选的泡沫（精矿）产品并于第二组的原矿中，所以第二组的入选矿石品位得到提高；第一组的粗精矿基本上由可浮性好的矿物组成，当其并入第二组时，可以加快矿物的浮游速度，富化泡沫层，有利于提高粗精矿品位和作业回收率，进而提高精矿品位和回收率；第一组的泡沫（精矿）对第二组被浮矿物具有一定的载体背负作用，从而改善分选过程，有利于提高选矿回收率；第一组泡沫（精矿）的加入，使第二组的被浮矿物量的增加，矿浆离子组成发生了变化，变得更有利于矿物的选别，同时，由于第一组泡沫（精矿）的加入，二次富集作用加强，难选矿物离子、矿泥覆盖等有害影响相对减弱，对提高分选指标十分有利；第一组泡沫（精矿）产品所带的过剩药剂进入第二组浮选可继续发挥作用，从而降低第二组的加药量。According to the coupling principle of organic combination of flotation reagents and the principle of carrier flotation, the positive synergistic effect between flotation reagents is fully exerted, the flotation of coarse and fine particles is strengthened, the flotation index is improved, and the consumption is reduced. In the present application, the raw ore pulp is divided into two groups. Since the rough and scavenged foam (concentrate) products of the first group are combined into the raw ore of the second group, the selected ore grade of the second group is improved; the first group The rough concentrate is basically composed of minerals with good floatability. When it is incorporated into the second group, it can speed up the floating speed of the minerals and enrich the foam layer, which is beneficial to improve the grade of the rough concentrate and the recovery rate of the operation, thereby improving the Concentrate grade and recovery rate; the first group of foam (concentrate) has a certain carrier effect on the second group of floating minerals, thereby improving the sorting process and improving the beneficiation recovery rate; the first group of foam (concentrate) The addition of ) increases the amount of the floating minerals in the second group, and the ion composition of the pulp changes, which is more conducive to the separation of minerals. At the same time, due to the addition of the first group of foam (concentrate), the secondary enrichment The collecting effect is strengthened, and the harmful effects such as refractory mineral ions and slag coverage are relatively weakened, which is very beneficial to improve the sorting index; the excess reagents brought by the first group of foam (concentrate) products can continue to play a role in the second group of flotation. , thereby reducing the dosage of the second group.
本发明的有益效果是：The beneficial effects of the present invention are:
（1）本发明中组合药剂之间的协同效应明显，提高了粗粒、连生体和微细粒铜矿物的回收率；选择性降低了脉石可浮性，提高了铜精矿品位和伴生金银在铜精矿中的含量，增加了铜精矿中的计价元素。(1) The synergistic effect between the combined agents in the present invention is obvious, which improves the recovery rate of coarse-grained, conjoined and fine-grained copper minerals; the selectivity reduces the floatability of gangue, and improves the grade of copper concentrate and associated copper minerals. The content of gold and silver in copper concentrate increases the value element in copper concentrate.
（2）在原矿含铜品位≦0.4%，伴生金≦0.09g/t，银≦1g/的条件下，应用本发明方法铜回收率可达92%以上，铜精矿品位≥20%，铜精矿中伴生金3~4g/t，银达23~30g/t。(2) Under the condition that the copper content of the original ore is less than or equal to 0.4%, the associated gold is less than or equal to 0.09g/t, and the silver is less than or equal to 1g/, the copper recovery rate of the method of the present invention can reach more than 92%, the copper concentrate grade is greater than or equal to 20%, and the copper The associated gold in the concentrate is 3~4g/t, and the silver is 23~30g/t.
（3）本发明与常规硫化浮选工艺相比，可提高铜精矿品位3-5百分点，提高铜回收率2%～3%，同时提高伴生金回收率5%～10%，银的回收率分别为5%～10%。(3) Compared with the conventional sulfide flotation process, the present invention can increase the copper concentrate grade by 3-5 percentage points, increase the copper recovery rate by 2% to 3%, and at the same time increase the associated gold recovery rate by 5% to 10%, and the silver recovery rate. Rates were 5% to 10%.
附图说明Description of drawings
图1为本发明的浮选工艺流程示意图。Fig. 1 is a schematic diagram of the flotation process flow of the present invention.
具体实施方式Detailed ways
下面结合实施例和附图对本发明做进一步说明。The present invention will be further described below with reference to the embodiments and accompanying drawings.
实施例1：本实施例的原矿为含铜品位0.4%，伴生金0.09g/t，银0.9g/t的铜矿石，对本实施例的铜矿石进行浮选，本实施例中的组合捕收剂SYD由以下质量份的组分组合得到：乙硫氮30%，Y89-3 50%，异戊基黄10%，丁铵黑药10%；起泡剂Z-9为仲辛醇；组合调整剂FDQ由以下质量份的组分组合得到：木薯淀粉20%，CMC 60%，腐植酸钠20%。Example 1: The raw ore in this example is copper ore with a copper content of 0.4%, associated gold 0.09g/t, and silver 0.9g/t. The copper ore in this example is flotated, and the combination in this example is Collector SYD is obtained by combining the following components by mass: 30% of ethyl thiazide, 50% of Y89-3, 10% of isopentyl yellow, 10% of butylammonium black medicine; foaming agent Z-9 is sec-octanol ; Combination regulator FDQ is obtained by combining the following components by mass: 20% of tapioca starch, 60% of CMC, and 20% of sodium humate.
如图1所示，本实施例的具体步骤如下：As shown in Figure 1, the specific steps of this embodiment are as follows:
（1）将伴生金银的低品位铜矿石进行湿磨，使矿石磨至细度为-74μm占90%，调节矿浆的质量浓度为40%，将矿浆分成等量的两组，首先向第一组矿浆中添加80g/t组合捕收剂SYD、10g/t起泡剂Z-9，搅拌2分钟，进行第一次粗选，得到第一次粗选精矿和第一次粗选尾矿，向第一次粗选尾矿中添加40g/t组合捕收剂SYD、5g/t起泡剂Z-9，搅拌2分钟，进行第二次粗选，得到第二次粗选精矿和第二次粗选尾矿，向第二次粗选尾矿中添加20g/t组合捕收剂SYD、5g/t起泡剂Z-9，搅拌2分钟，进行扫选得到扫选精矿和第一组扫选尾矿，将第一次粗选精矿、第二次粗选精矿和扫选精矿混合后再与第二组矿浆合并；(1) Wet grinding the low-grade copper ore associated with gold and silver, so that the ore is ground to a fineness of -74 μm accounting for 90%, and the mass concentration of the ore pulp is adjusted to 40%, and the ore pulp is divided into two equal groups. Add 80g/t combined collector SYD and 10g/t foaming agent Z-9 to the first group of pulp, stir for 2 minutes, carry out the first roughing, and obtain the first roughing concentrate and the first roughing Tailings, add 40g/t combined collector SYD and 5g/t foaming agent Z-9 to the first roughing tailings, stir for 2 minutes, carry out the second roughing, and obtain the second roughing concentrate ore and the second roughing tailings, add 20g/t combined collector SYD and 5g/t foaming agent Z-9 to the second roughing tailings, stir for 2 minutes, and carry out sweep selection to obtain sweeping concentrate Mine and the first group of sweeping tailings, the first roughing concentrate, the second roughing concentrate and the sweeping concentrate are mixed and then combined with the second group of pulp;
（2）向步骤（1）合并后的矿浆中添加80g/t组合捕收剂SYD、10g/t起泡剂Z-9，搅拌2分钟，进行第一次粗选分离，获得第一次浮选泡沫和第一次槽内矿浆，然后向第一次槽内矿浆中添加40g/t组合捕收剂SYD、5g/t起泡剂Z-9，搅拌2分钟，进行第二次粗选分离，获得第二次浮选泡沫和第二次槽内矿浆，向第二次槽内矿浆中添加20g/t组合捕收剂SYD、5g/t起泡剂Z-9，搅拌2分钟，进行扫选分离，获得扫选浮选泡沫和第二组扫选尾矿，将步骤（1）的第一组扫选尾矿与第二组扫选尾矿合并作为最终尾矿；(2) Add 80g/t combined collector SYD and 10g/t foaming agent Z-9 to the combined pulp in step (1), stir for 2 minutes, carry out the first rough separation, and obtain the first flotation Select the foam and the pulp in the first tank, then add 40g/t combined collector SYD and 5g/t foaming agent Z-9 to the pulp in the first tank, stir for 2 minutes, and carry out the second rough separation , to obtain the second flotation foam and the second pulp in the tank, add 20g/t combined collector SYD and 5g/t foaming agent Z-9 to the second pulp in the tank, stir for 2 minutes, and sweep Separation and separation to obtain sweeping flotation foam and second group sweeping tailings, and combining the first and second sweeping tailings in step (1) as the final tailings;
（3）将步骤（2）的第一次浮选泡沫与第二次浮选泡沫合并，并调节矿浆的质量浓度25%，然后向矿浆中添加100g/t组合调整剂FDQ，搅拌2分钟，进行第一次精选作业，得到第一次精选泡沫和第一次精选尾矿，第一次精选尾矿与步骤（2）的扫选浮选泡沫合并后返回第一次粗选分离，形成闭路循环，调节第一次精选泡沫的质量浓度为22%，然后添加50g/t组合调整剂FDQ，搅拌2分钟，进行第二次精选作业，得到第二次精选泡沫和第二次精选尾矿，第二次精选尾矿返回第一次精选作业中，形成闭路循环，将第二次精选泡沫进行第三次精选作业，得到第三次精选泡沫和第三次精选尾矿，将第三次精选尾矿返回第二次精选作业中，形成闭路循环，第三次精选泡沫即为最终的铜精矿。(3) Combine the first flotation froth and the second flotation froth in step (2), adjust the mass concentration of the pulp to 25%, then add 100g/t combined modifier FDQ to the pulp, stir for 2 minutes, Carry out the first selection operation to obtain the first selection foam and the first selection tailings. The first selection tailings are combined with the scavenging flotation foam in step (2) and return to the first roughing selection Separation, forming a closed loop, adjusting the mass concentration of the first selected foam to 22%, then adding 50g/t of combined regulator FDQ, stirring for 2 minutes, and performing the second selection operation to obtain the second selected foam and The second selection of tailings, the second selection of tailings is returned to the first selection operation, forming a closed loop, the second selection of foam is carried out for the third selection operation, and the third selection of foam is obtained. And the third selection of tailings, the third selection of tailings are returned to the second selection operation to form a closed loop, and the third selection of foam is the final copper concentrate.
铜精矿品位21.50%，铜的回收率93.22%；伴生金4.2g/t，伴生金回收率80.23%，伴生银40g/t，伴生银回收率76.44%。The grade of copper concentrate is 21.50%, the recovery rate of copper is 93.22%; the recovery rate of associated gold is 4.2g/t, the recovery rate of associated gold is 80.23%, the recovery rate of associated silver is 40g/t, and the recovery rate of associated silver is 76.44%.
实施例2：本实施例的原矿为含铜品位0.38%，伴生金0.07g/t，银0.78g/t的铜矿石，本实施例中的组合捕收剂SYD由以下质量份的组分组合得到：乙硫氮20%，Y89-3 60%，异戊基黄15%，丁铵黑药5%；起泡剂Z-9为仲辛醇；组合调整剂FDQ由以下质量份的组分组合得到：木薯淀粉30%，CMC 40%，腐植酸钠30%。对本实施例的铜矿石进行浮选，如图1所示，具体步骤如下：Example 2: The raw ore in this example is copper ore with a copper content of 0.38%, associated gold 0.07g/t, and silver 0.78g/t. The combined collector SYD in this example is composed of the following components by mass Combination to obtain: 20% of ethyl dithiocarbamate, 60% of Y89-3, 15% of isopentyl yellow, 5% of butylammonium black medicine; foaming agent Z-9 is sec-octanol; combination regulator FDQ is composed of the following parts by mass Sub-combination to obtain: tapioca starch 30%, CMC 40%, sodium humate 30%. Carry out flotation to the copper ore of this embodiment, as shown in Figure 1, and the specific steps are as follows:
（1）将伴生金银的低品位铜矿石进行湿磨，使矿石磨至细度为-74μm占70%，调节矿浆的质量浓度为36%，将矿浆分成等量的两组，首先向第一组矿浆中添加90g/t组合捕收剂SYD、12g/t起泡剂Z-9，搅拌3分钟，进行第一次粗选，得到第一次粗选精矿和第一次粗选尾矿，向第一次粗选尾矿中添加30g/t组合捕收剂SYD、4g/t起泡剂Z-9，搅拌3分钟，进行第二次粗选，得到第二次粗选精矿和第二次粗选尾矿，向第二次粗选尾矿中添加15g/t组合捕收剂SYD、4g/t起泡剂Z-9，搅拌3分钟，进行扫选得到扫选精矿和第一组扫选尾矿，将第一次粗选精矿、第二次粗选精矿和扫选精矿混合后再与第二组矿浆合并；(1) Wet grinding the low-grade copper ore associated with gold and silver, so that the ore is ground to a fineness of -74 μm, accounting for 70%, and the mass concentration of the pulp is adjusted to 36%. The pulp is divided into two groups of equal amount. Add 90g/t combined collector SYD and 12g/t foaming agent Z-9 to the first group of pulp, stir for 3 minutes, carry out the first roughing, and obtain the first roughing concentrate and the first roughing For the tailings, add 30g/t of combined collector SYD and 4g/t of foaming agent Z-9 to the first roughing tailings, stir for 3 minutes, carry out the second roughing, and obtain the second roughing concentrate ore and the second roughing tailings, add 15g/t combined collector SYD and 4g/t foaming agent Z-9 to the second roughing tailings, stir for 3 minutes, and carry out sweep selection to obtain sweep concentrate Mine and the first group of sweeping tailings, the first roughing concentrate, the second roughing concentrate and the sweeping concentrate are mixed and then combined with the second group of pulp;
（2）向步骤（1）合并后的矿浆中添加70g/t组合捕收剂SYD、8g/t起泡剂Z-9，搅拌3分钟，进行第一次粗选分离，获得第一次浮选泡沫和第一次槽内矿浆，然后向第一次槽内矿浆中添加50g/t组合捕收剂SYD、6g/t起泡剂Z-9，搅拌3分钟，进行第二次粗选分离，获得第二次浮选泡沫和第二次槽内矿浆，向第二次槽内矿浆中添加25g/t组合捕收剂SYD、6g/t起泡剂Z-9，搅拌3分钟，进行扫选分离，获得扫选浮选泡沫和第二组扫选尾矿，将步骤（1）的第一组扫选尾矿与第二组扫选尾矿合并作为最终尾矿；(2) Add 70g/t combined collector SYD and 8g/t foaming agent Z-9 to the combined pulp in step (1), stir for 3 minutes, carry out the first rough separation and obtain the first flotation Select the foam and the pulp in the first tank, then add 50g/t combined collector SYD and 6g/t foaming agent Z-9 to the pulp in the first tank, stir for 3 minutes, and carry out the second rough separation , obtain the second flotation foam and the second pulp in the tank, add 25g/t combined collector SYD and 6g/t foaming agent Z-9 to the second pulp in the tank, stir for 3 minutes, and sweep Separation and separation to obtain sweeping flotation foam and second group sweeping tailings, and combining the first and second sweeping tailings in step (1) as the final tailings;
（3）将步骤（2）的第一次浮选泡沫与第二次浮选泡沫合并，并调节矿浆的质量浓度为22%，然后向矿浆中添加120g/t组合调整剂FDQ，搅拌3分钟，进行第一次精选作业，得到第一次精选泡沫和第一次精选尾矿，第一次精选尾矿与步骤（2）的扫选浮选泡沫合并后返回第一次粗选分离，形成闭路循环，调节第一次精选泡沫的质量浓度为20%，然后添加40g/t组合调整剂FDQ，搅拌3分钟，进行第二次精选作业，得到第二次精选泡沫和第二次精选尾矿，第二次精选尾矿返回第一次精选作业中，形成闭路循环，将第二次精选泡沫进行第三次精选作业，得到第三次精选泡沫和第三次精选尾矿，将第三次精选尾矿返回第二次精选作业中，形成闭路循环，第三次精选泡沫即为最终的铜精矿。(3) Combine the first flotation froth and the second flotation froth in step (2), adjust the mass concentration of the pulp to 22%, then add 120g/t of combined modifier FDQ to the pulp, and stir for 3 minutes , carry out the first selection operation, and obtain the first selection foam and the first selection tailings. Select and separate to form a closed loop, adjust the mass concentration of the first selected foam to 20%, then add 40g/t of combined regulator FDQ, stir for 3 minutes, carry out the second selection operation, and obtain the second selected foam And the second selection of tailings, the second selection of tailings returns to the first selection operation, forming a closed loop, the second selection foam is carried out for the third selection operation, and the third selection is obtained. Foam and the third selected tailings, the third selected tailings are returned to the second selected operation to form a closed loop, and the third selected foam is the final copper concentrate.
铜精矿品位21.33%，铜的回收率92.23%；伴生金3.04g/t，伴生金回收率75.13%，伴生银23.80g/t，伴生银回收率52.79%。The grade of copper concentrate is 21.33%, the recovery rate of copper is 92.23%; the recovery rate of associated gold is 3.04g/t, the recovery rate of associated gold is 75.13%, the recovery rate of associated silver is 23.80g/t, and the recovery rate of associated silver is 52.79%.
实施例3：本实施例的原矿为含铜品位0.39%，伴生金0.08g/t，银0.82g/t的铜矿石，本实施例中的组合捕收剂SYD由以下质量份的组分组合得到：乙硫氮25%，Y89-3 55%，异戊基黄12.5%，丁铵黑药7.5%；起泡剂Z-9为仲辛醇；组合调整剂FDQ由以下质量份的组分组合得到：木薯淀粉25%，CMC 50%，腐植酸钠25%。对本实施例的铜矿石进行浮选，如图1所示，具体步骤如下：Example 3: The raw ore in this example is copper ore with a copper content of 0.39%, associated gold 0.08g/t, and silver 0.82g/t. The combined collector SYD in this example is composed of the following components by mass Combination to obtain: 25% of ethyl disulfide, 55% of Y89-3, 12.5% of isopentyl yellow, 7.5% of butylammonium black medicine; foaming agent Z-9 is sec-octanol; combination regulator FDQ is composed of the following parts by mass Sub-combination to obtain: 25% tapioca starch, 50% CMC, 25% sodium humate. Carry out flotation to the copper ore of this embodiment, as shown in Figure 1, and the specific steps are as follows:
（1）将伴生金银的低品位铜矿石进行湿磨，使矿石磨至细度为-74μm占80%，调节矿浆的质量浓度为35%，将矿浆分成等量的两组，首先向第一组矿浆中添加70g/t组合捕收剂SYD、8g/t起泡剂Z-9，搅拌4分钟，进行第一次粗选，得到第一次粗选精矿和第一次粗选尾矿，向第一次粗选尾矿中添加50g/t组合捕收剂SYD、6g/t起泡剂Z-9，搅拌4分钟，进行第二次粗选，得到第二次粗选精矿和第二次粗选尾矿，向第二次粗选尾矿中添加25g/t组合捕收剂SYD、6g/t起泡剂Z-9，搅拌4分钟，进行扫选得到扫选精矿和第一组扫选尾矿，将第一次粗选精矿、第二次粗选精矿和扫选精矿混合后再与第二组矿浆合并；(1) Wet grinding the low-grade copper ore associated with gold and silver, so that the ore is ground to a fineness of -74 μm, accounting for 80%, and the mass concentration of the pulp is adjusted to 35%. The pulp is divided into two groups of equal amount. Add 70g/t combined collector SYD and 8g/t foaming agent Z-9 to the first group of pulp, stir for 4 minutes, carry out the first roughing, and obtain the first roughing concentrate and the first roughing Tailings, add 50g/t combined collector SYD and 6g/t foaming agent Z-9 to the first roughing tailings, stir for 4 minutes, carry out the second roughing, and obtain the second roughing concentrate ore and the second roughing tailings, add 25g/t combined collector SYD and 6g/t foaming agent Z-9 to the second roughing tailings, stir for 4 minutes, and carry out sweep selection to obtain sweep concentrate Mine and the first group of sweeping tailings, the first roughing concentrate, the second roughing concentrate and the sweeping concentrate are mixed and then combined with the second group of pulp;
（2）向步骤（1）合并后的矿浆中添加90g/t组合捕收剂SYD、12g/t起泡剂Z-9，搅拌4分钟，进行第一次粗选分离，获得第一次浮选泡沫和第一次槽内矿浆，然后向第一次槽内矿浆中添加30g/t组合捕收剂SYD、4g/t起泡剂Z-9，搅拌4分钟，进行第二次粗选分离，获得第二次浮选泡沫和第二次槽内矿浆，向第二次槽内矿浆中添加15g/t组合捕收剂SYD、4g/t起泡剂Z-9，搅拌4分钟，进行扫选分离，获得扫选浮选泡沫和第二组扫选尾矿，将步骤（1）的第一组扫选尾矿与第二组扫选尾矿合并作为最终尾矿；(2) Add 90g/t combined collector SYD and 12g/t foaming agent Z-9 to the combined pulp in step (1), stir for 4 minutes, carry out the first rough separation, and obtain the first flotation Select the foam and the pulp in the first tank, then add 30g/t combined collector SYD and 4g/t foaming agent Z-9 to the pulp in the first tank, stir for 4 minutes, and carry out the second rough separation , to obtain the second flotation foam and the second pulp in the tank, add 15g/t combined collector SYD and 4g/t foaming agent Z-9 to the second pulp in the tank, stir for 4 minutes, and sweep Separation and separation to obtain sweeping flotation foam and second group sweeping tailings, and combining the first and second sweeping tailings in step (1) as the final tailings;
（3）将步骤（2）的第一次浮选泡沫与第二次浮选泡沫合并，并调节矿浆的质量浓度为20%，然后向矿浆中添加80g/t组合调整剂FDQ，搅拌4分钟，进行第一次精选作业，得到第一次精选泡沫和第一次精选尾矿，第一次精选尾矿与步骤（2）的扫选浮选泡沫合并后返回第一次粗选分离，形成闭路循环，调节第一次精选泡沫的质量浓度为25%，然后添加60g/t组合调整剂FDQ，搅拌5分钟，进行第二次精选作业，得到第二次精选泡沫和第二次精选尾矿，第二次精选尾矿返回第一次精选作业中，形成闭路循环，将第二次精选泡沫进行第三次精选作业，得到第三次精选泡沫和第三次精选尾矿，将第三次精选尾矿返回第二次精选作业中，形成闭路循环，第三次精选泡沫即为最终的铜精矿。(3) Combine the first flotation froth and the second flotation froth in step (2), adjust the mass concentration of the pulp to 20%, then add 80g/t combined modifier FDQ to the pulp, and stir for 4 minutes , carry out the first selection operation, and obtain the first selection foam and the first selection tailings. Select and separate to form a closed loop, adjust the mass concentration of the first selected foam to 25%, then add 60g/t of combined regulator FDQ, stir for 5 minutes, carry out the second selection operation, and obtain the second selected foam And the second selection of tailings, the second selection of tailings returns to the first selection operation, forming a closed loop, the second selection foam is carried out for the third selection operation, and the third selection is obtained. Foam and the third selected tailings, the third selected tailings are returned to the second selected operation to form a closed loop, and the third selected foam is the final copper concentrate.
铜精矿品位22.43%，铜的回收率91.58%；伴生金3.75g/t，伴生金回收率72.86%，伴生银27.39g/t，伴生银回收率64.56%。The grade of copper concentrate is 22.43%, the recovery rate of copper is 91.58%; the recovery rate of associated gold is 3.75g/t, the recovery rate of associated gold is 72.86%, the recovery rate of associated silver is 27.39g/t, and the recovery rate of associated silver is 64.56%.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.
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