CN104195357A - Method for enriching dissipated metal indium in high-iron and low-zinc complex polymetallic calcined ores - Google Patents
Method for enriching dissipated metal indium in high-iron and low-zinc complex polymetallic calcined ores Download PDFInfo
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- CN104195357A CN104195357A CN201410424666.XA CN201410424666A CN104195357A CN 104195357 A CN104195357 A CN 104195357A CN 201410424666 A CN201410424666 A CN 201410424666A CN 104195357 A CN104195357 A CN 104195357A
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Abstract
The invention discloses a method for enriching a dissipated metal indium in high-iron and low-zinc complex polymetallic calcined ores. In the process of carrying out reduction volatilization and smelting on high-iron and low-zinc complex polymetallic calcined ores, 5 kg of high-lead and zinc-in-chlorine materials (low-grade second-rate calcined ores) are added into every 100 kg of zinc calcined sand so as to be mixed, the grade of lead entering a furnace is controlled at 0.15-0.25%, and the grade of chlorine is controlled at 0.20-0.40%. According to the method disclosed by the invention, the recovery rate and direct yield of main metal zinc can be effectively increased, the recovery rate is more than 97%, the recovery rate of indium enriched along with the main metal zinc is increased by 20-30%, and the field operation environment is significantly improved. The recovery loss of indium in wastes subjected to reduction smelting processing is reduced by over 8%. The method is simple and convenient in operation and low in cost, and has good popularization and application prospect.
Description
Technical field
The invention belongs to reduction volatilization smelting technique field, specifically relate to the enriching method of scattered metals indium in the low Zn complex multi-metal roasting of a kind of high ferro ore deposit.
Background technology
At present, the processing in the low Zn complex multi-metal of high ferro roasting ore deposit is that the recovery utilization rate of the scattered metals indium that is rich in the low Zn complex multi-metal roasting of the difficult problem of this area, especially high ferro ore deposit is also very undesirable always.In prior art, the method that reclaims the scattered metals indium in the low Zn complex multi-metal roasting of high ferro ore deposit has a lot, for example: acidifying leaching-extraction process, extraction-electrodeposition method etc. leach-extract-is returned in vacuum melting method, hydrolysis method, Selective dissolution method, ion exchange method, liquid-film method, the preliminary enrichment acidifying of reduction volatilization melting, and using at present maximum is acidifying leaching-extraction process.These methods, because the indium metal in leaching process is comparatively disperseed, cause recovery utilization rate very low.Therefore, the current scattered metals indium that can recycle economically only accounts for few part of reserves in base metal, is subject to the restriction of technical qualification and recovery system high investment, and part scattered metals indium is all smelted the waste material abandoned after processing with base metal.The recovery utilization rate that how to improve scattered metals indium in the low Zn complex multi-metal roasting of high ferro ore deposit, there is not yet terms of settlement well in prior art.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, the enriching method of scattered metals indium in the low Zn complex multi-metal roasting of a kind of high ferro ore deposit is provided.Utilize reduction volatilization melting treatment technology, in promoting dissipated metal indium recovery, also improve the extraction operating environment of main metallic zinc.
Object of the present invention is achieved by the following technical programs.
Except as otherwise noted, percentage ratio of the present invention is mass percent.
The enriching method of scattered metals indium in the low Zn complex multi-metal roasting of a kind of high ferro ore deposit, it is characterized in that: the low Zn complex multi-metal roasting of high ferro ore deposit is in reduction volatilization fusion process, prepare burden by adding the high lead of 5kg, chlorine material containing zinc (low-grade roasting ore deposit) in every 100kg zinc baking sand, control plumbous grade in stove material is 0.15～0.25% simultaneously, chlorine grade 0.20～0.40%.
Technical scheme of the present invention is mainly based on following understanding: by lead, indium is had the principle of trapping effect, rationally control aborning the enrichment that is conducive to indium into the leaded grade of stove compound, improve direct yield and the rate of recovery of indium, reduce indium loss in melting waste slag.When entering the plumbous grade of stove compound and exceeding 0.25%, main metallic zinc Enrichment Indium weak effect, enters the object that the plumbous grade of stove compound is unfavorable for reaching enrichment scattered metals indium lower than 0.15% time.The chlorine of simultaneously allocating into, in the time extracting main metallic zinc, can improve operating environment and technic index, and the zinc gray of output is particulate state simultaneously.If exceed 0.40% when above but drop into chlorine grade, easily cause production control difficulty to strengthen, be difficult for drawing ash and affect production technique index.
With respect to prior art, the present invention has the following advantages:
1, the present invention can effectively improve the rate of recovery and the direct yield of main metallic zinc, improves the operating environment of reduction volatilization fusion process simultaneously.The rate of recovery of main metallic zinc reaches more than 97%, improves 20～30% with the indium of main metallic zinc enrichment, and execute-in-place environment obviously improves.
2, in main metal, indium content obviously rises, and in the waste material after main smelting and processing of metals, indium content obviously declines, and in the waste material after retailoring processing, indium recovery loss reduces more than 8%.
3, the method is easy and simple to handle, with low cost, has good popularizing application prospect.
Brief description of the drawings
Fig. 1 adds leaded roasting ore deposit and does not add roasting ore deposit In rate of recovery contrast effect broken line graph leaded time in the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail, but drawings and Examples are not limitation of the invention.
Embodiment 1:
In the electric furnace reduction volatile smelting process of the low Zn complex multi-metal roasting of high ferro ore deposit, add high plumbous, chlorine material containing zinc (low-grade roasting ore deposit), control in retailoring process and enter stove compound lead, cl content, carry out electric furnace reduction melting productive capacity contrast experiment:
Tested on December 30th, 2013 and implement in 2# electric furnace, for guaranteeing the accuracy of experimental data, high add-on plumbous, chlorine material containing zinc is carried out step by step and is increased, when beginning, every 100kg calcining adds high plumbous, chlorine material containing zinc 5kg, control into the plumbous grade 0.16% of stove, chlorine grade 0.23%, carries out index contrast with not adding high 1# electric furnace and 3# electric furnace plumbous, chlorine material containing zinc, and indices contrast is in table 1, table 2 (experimental data adds up 1 time weekly).
Experimental session 2# electric furnace without any abnormal, but has considerable change in a cold operation with respect to 1#, the 3# electric furnace working of a furnace, red-tape operati, 1. when a lonely reason zinc gray exhaust gas volumn be significantly less than do not increase plumbous material containing zinc before and 1#, 3# electric furnace; 2. part zinc gray becomes particulate state.
Experiment second stage started 2# electric furnace 100kg calcining to add high plumbous, chlorine material containing zinc 8kg on December 13rd, 2013, control into the plumbous grade 0.25% of stove, chlorine grade 0.38%, 1#, the control of 3# electric furnace enter the plumbous grade 0.021%, 0.022% of stove, enter stove chlorine grade 0.30%, relevant data is in table 1, table 2.
Experimental session 1#, 2#, the 3# electric furnace working of a furnace and red-tape operati are stable, but have considerable change in a cold operation.First, when the lonely reason zinc gray of 2# electric furnace one, exhaust gas volumn is little compared with 1#, 3# electric furnace, but with add that 5kg is high plumbous, when chlorine material containing zinc compared with big-difference too not; Next is that 2# electric furnace zinc gray has more than 98% and granulates, and particle size is similar to pea grain.
Test three phases and started 1#, 2# electric furnace 100kg calcining to add high plumbous, chlorine material containing zinc 5kg January 18 later simultaneously, control into the plumbous grade of stove and be respectively 0.173%, 0.171%; Chlorine grade is respectively 0.281%, 0.291%, adds with 3# electric furnace that 10kg is unleaded, chlorine contrasts containing zinc returning charge simultaneously.
Experimental session 1#, 2# electric furnace significantly do not change add 5kg with 2# electric furnace in the working of a furnace and operation time.3# electric furnace adds that 10kg is unleaded, chlorine is containing after zinc returning charge, and zinc gray amount is apparently higher than 1#, 2# electric furnace, other no significant difference.Relevant data is in table 1, table 2
Table 1, high plumbous, chlorine material containing zinc experiment In index contrast
Remarks: added that 5kg is high plumbous, chlorine material containing zinc on 1# electric furnace 19-2 in the January month 5,3# electric furnace February 1 added that 10kg is unleaded, chlorine is containing zinc returning charge.
As shown in Table 1: in retailoring process, control into the plumbous grade 0.15-0.25% of stove compound, in crude zinc, the accumulation rate of indium obviously improves.
Table 2, high plumbous, chlorine material containing zinc experiment Zn index contrast
Remarks: added that 5kg is high plumbous, chlorine material containing zinc on 1# electric furnace 19-2 in the January month 5,3# electric furnace February 1 added that 10kg is unleaded, chlorine is containing zinc returning charge.
As shown in Table 2: in retailoring process, control into the plumbous grade 0.15-0.25% of stove compound, chlorine grade 0.2-0.4%, the direct yield of zinc is further promoted.
Scattered metals indium enrichment in base metal zinc reducing and smelting process, enter rectification process operation with main metallic zinc, be enriched in hard zinc and B# zinc and reach 60000g/t containing indium, taking hard zinc and high indium B# zinc as raw material, through electrical crucible remove impurity make use of physics methods, lower boiling metal (zinc) enters ingot casting after condenser condenses, output 3# zinc, and high boiling point metal (indium, iron, lead, tin, copper etc.) forms indium slag, end lead; Indium slag, after caustic soda maturation process, is finely ground into indium ground-slag through Raymond mill, and lead of the interior end of crucible is manually fished for ingot casting, through changing plumbous crucible process output alkaline residue powder; Indium is enriched in indium ground-slag, alkaline residue powder, carries indium, tin etc. through wet processing.
After retailoring finishes, the indium metal of gained crude zinc and enrichment is detected to (upper table has had detection data):
By production test repeatedly, final production is applied the main metallic zinc rate of recovery and is broken through more than 97%, and indium recovery obviously improves; In crude zinc, the enrichment of indium improves, and in floor iron and grain slag, indium loss obviously reduces.
(1) grain slag, floor iron obviously decline containing indium, in grain slag, have on average reduced by 49.8% containing In; In floor iron, on average reduce by 67% containing In.
(2) in crude zinc, the accumulation rate of indium improves 18.5%, has further verified that by production practice lead has good trapping effect to indium.
(3) direct yield of zinc is further promoted, and zinc direct yield 81.34% brings up to 86%.
(4) one cold operating environments are improved: the granular zinc gray of a cold output, the exhaust gas volumn of scratching in the ashes obviously reduces, employee's work situation obviously improves, one cold easy temperature control system, the particle zinc gray of output, by screening, can directly add electric furnace to use simultaneously, reduces the granulation of getting the raw materials ready, baking workload, reduce raw coal consumption, increased work efficiency.
As shown in Figure 1, in reduction volatilization fusion process, control and chlorine grade leaded into stove compound, be conducive to the extraction of scattered metals indium.
| Project | Zn | In(g/t) | Pb | Cl |
| Zinc ore concentrate | 41～43 | 400～600 | 0.09～0.01 | 0.04～0.06 |
| Calcining | 53～55 | 550～750 | 0.03～0.05 | 0.009～0.01 |
| Inferior roasting ore deposit | 49～50 | 50～60 | 4.0～4.5 | 3.42 |
Table 3
As shown in Table 3, zinc, indium, lead, cl content in zinc ore concentrate, high ferro low Zn complex multi-metal roasting ore deposit and high lead, chlorine material containing zinc (low-grade roasting ore deposit)
Table 4
As shown in Table 4, in retailoring process, add leaded, chlorine material containing zinc after overall target obviously improve
Embodiment 2
Repeat embodiment 1, have following difference: controlling the lead content entering in stove compound in retailoring process is 0.35%, and cl content exceedes more than 0.4%, occur the difficult cleaning of a cold zinc gray caking in production test, gas passage easily blocks, and affects production healthy tissues; When crude zinc contains indium and enters the leaded grade 0.25% of stove compound control, have no obvious raising.
The low Zn complex multi-metal roasting of described high ferro ore deposit, in the development and utilization of reduction volatilization melting new technology, wherein, comprises that main metallic zinc direct yield and the rate of recovery improve, and main METAL EXTRACTION process exhaust gas volumn reduces, and operating environment is improved.The outcast indium recovery loss of waste material that scattered metals indium is smelted after processing with base metal reduces more than 8%.
Claims (1)
1. the enriching method of scattered metals indium in the low Zn complex multi-metal roasting of a high ferro ore deposit, it is characterized in that: the low Zn complex multi-metal roasting of high ferro ore deposit is in reduction volatilization fusion process, prepare burden by adding low-grade roasting ore deposit of 5kg in every 100kg zinc baking sand, control plumbous grade in stove material is 0.15～0.25% simultaneously, chlorine grade 0.20～0.40%.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265525A (en) * | 2008-04-16 | 2008-09-17 | 葫芦岛锌业股份有限公司 | Method for enriching indium from indium-containing crude lead produced by pyrogenic process zinc smelting technique |
| CN103388081A (en) * | 2013-07-23 | 2013-11-13 | 中南大学 | Bath smelting method and apparatus of zinc sulfide concentrate and lead-zinc containing materials |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265525A (en) * | 2008-04-16 | 2008-09-17 | 葫芦岛锌业股份有限公司 | Method for enriching indium from indium-containing crude lead produced by pyrogenic process zinc smelting technique |
| CN103388081A (en) * | 2013-07-23 | 2013-11-13 | 中南大学 | Bath smelting method and apparatus of zinc sulfide concentrate and lead-zinc containing materials |
Non-Patent Citations (2)
| Title |
|---|
| 周智华等: "稀散金属铟富集与回收技术的研究进展", 《有色金属》 * |
| 沈丽娟等: "锌冶炼过程中铟的富集与回收技术研究进展", 《矿产综合利用》 * |
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