CN100473733C - Novel process for cooling of pyrogenic process zinc smelting - Google Patents
Novel process for cooling of pyrogenic process zinc smelting Download PDFInfo
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- CN100473733C CN100473733C CNB2007101484666A CN200710148466A CN100473733C CN 100473733 C CN100473733 C CN 100473733C CN B2007101484666 A CNB2007101484666 A CN B2007101484666A CN 200710148466 A CN200710148466 A CN 200710148466A CN 100473733 C CN100473733 C CN 100473733C
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- zincum
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Abstract
The present invention relates to a novel cooling art for the zinc-smelting with the pyrogenic process. The novel cooling art is characterized in that zinc steam in an electric furnace passes through a plurality of black lead rotors having independent cooling ponds, different cooling ponds are controlled to provide different working temperature. By arranging with three rotor independent recovery cooling chambers and controlling the cooling temperature of different cooling chambers, the present invention realizes the respective recovery of the metal such as plumbum, zincum, cadmium, and argentum, thereby improving the production quality and the yield, and increasing greatly the added value of the product and the profit margin of the corporation. The art can recover and enrich the metal such as plumbum, zincum, cadmium, argentums, and indium on the basis that any energy sources are not increased. Compared with the present rectifying art in the zincum and plumbum and cadmium metallurgy column with the pyrogenic process, one ton of zincum can save about over 600 RMB of fuel bills, and about 500 RMB of the manpower secondary processing damage, the two are added, one ton of zincum can save over 1100 RMB of the production cost; however, the production cost of one ton of zincum of adding additionally one rotor only has tens RMB.
Description
Technical field
The invention belongs to the non-ferrous metal preparing technical field, particularly relate to a kind of novel process for cooling of pyrogenic process zinc smelting.
Background technology
In the pyrometallurgy of zinc of prior art, comprise the cooling of one-level cooling and secondary, wherein the one-level cooling employing graphite rotator zinc liquid of kicking up cools off zinc fume, this scheme condensation efficiency height, and equipment is simple, is adopted by all big factories.But since this scheme with two rotors in a zinc pond, the common metal that reclaims in the zinc fume, cause metals such as plumbous zinc not separate, product is leaded contain assorted many, especially electric furnace zinc smelting is because of the smelting temperature height, and quality product is difficult to reach No. 5 zinc standards of country, thereby poor product quality, the zinc ingot metal of output must could be sold through secondary processing, and comprehensive benefit is low.The secondary cooling adopts 6 Venturi meters of two-stage washing two-stage to draw gas, and this mode 1. is very easily stopped up and done Lan Fenxiang, causes towards stove; 2. draft is not enough, causes the body of heater negative pressure little; 3. detersive efficiency is low, and exhaust emissions contains zinc, contains the cadmium height, and loss is big.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, provide a kind of and can a step solve metal separation and rich long-pending such as plumbous zinc cadmium copper indium, must not add the energy in addition and just can reclaim metal such as plumbous zinc cadmium silver-bearing copper indium in the zinc fume respectively, thereby effectively improve the quality of products, enlarge and contain zinc raw material and assorted material use range, as the plumbous zinc oxide of height etc., promote enterprise profit spatial novel process for cooling of pyrogenic process zinc smelting.
Technical scheme of the present invention is:
A kind of novel process for cooling of pyrogenic process zinc smelting is characterized in that: the zinc fume of pyrometallurgy of zinc output successively by a plurality of graphite rotators with independent cooling pool, is controlled different cooling pools and had different working temperatures;
The working temperature of above-mentioned different cooling pools is decided according to the condensing temperature of recovery metal;
Above-mentioned different cooling pool adopts different heat-eliminating mediums according to the recovery metal;
Above-mentioned graphite rotator has three grades, wherein Dui Ying one-level cooling pool working temperature is decided heat-eliminating medium for plumbous according to the condensation point of lead, iron and copper, the working temperature of secondary cooling pool is decided heat-eliminating medium according to the condensing temperature of zinc be zinc, and the working temperature of three grades of cooling pools is decided heat-eliminating medium according to the condensing temperature of cadmium be zinc or cadmium;
Adopt three grades of Venturi meters to take out in advance and wash above-mentioned zinc fume by last cooling pool.
The present invention independently reclaims cooling room by triple-spool is set, and controls the cooling temperature of different cooling rooms, realizes reclaiming respectively metals such as plumbous zinc cadmium silver, thereby has improved quality product and yield, has promoted the profit margin of value-added content of product and enterprise significantly.
After using present technique, a cold condensation efficiency is brought up to more than 99.8%, be increased zinc output and direct yield, reduce zinc gray, blue powder yield, and, can also make the clean more and environmental protection of exhaust emissions owing to strengthened two cold-draw power and washing times.
This technology can reclaim and rich amassing metals such as plumbous zinc-copper cadmium silver indiums on the basis that does not increase any energy.Compare more than 600 yuan of ton zinc expense capable of saving fuel with the present plumbous cadmium tower of pyrometallurgy of zinc rectification process, about 500 yuan of the artificial secondary processing financial loss of equipment etc., two additions, ton zinc can save production cost more than 1100 yuan.And the ton zinc production cost that increases primary rotor has only several ten yuan more.
The present invention can use and contain assorted higher zinc oxide, contains the raw material as pyrometallurgy of zinc such as zinc auxiliary material, thereby solves raw material situation in short supply, improves the business economic benefit.
Description of drawings
Fig. 1 is a prior art cooling work functional block diagram;
Fig. 2 is a cooling work functional block diagram of the present invention;
Fig. 3 is prior art two cold principle of work block diagrams;
Fig. 4 is the present invention's two cold principle of work block diagrams.
Embodiment
With electric furnace zinc smelting or zinc vertical retorting steam successively the one-level graphite rotator by having independent cooling pool, have the secondary graphite rotator of independent cooling pool and have three grades of graphite rotators of independent cooling pool, the used heat-eliminating medium first step is plumbous, the second stage is zinc, and the third stage can be that zinc also can be cadmium.Each cooling pool is determined its working temperature according to the condensing temperature of recovery metal, decide according to the condensation point of lead, iron, copper, silver as one-level cooling pool working temperature, generally is controlled at about 950 ℃, finally can obtain the precious metals containing lead ingot casting; The working temperature of secondary cooling pool is decided according to the condensing temperature of zinc, generally is controlled at about 770 ℃, finally can obtain No. one or No. two zinc casting ingots; The working temperature of three grades of cooling pools is decided according to the condensing temperature of cadmium, generally is controlled at about 550 ℃, finally can obtain the high cadmium zinc ingot casting.The product of above-mentioned acquisition can directly be sold, and is selling the back of also can being purified.
Adopt three grades of Venturi meters to take out in advance and wash above-mentioned zinc fume after coming out by three grades of cooling pools, promptly on the basis of original two refrigeration techniques, increase one-level and take out in advance and wash.Be specially: the zinc fume after three grades of cooling pools are come out is at first by the one-level washer, be evacuated to two-stage scrubber with four Venturi meters that are set up in parallel, be evacuated to three grades of washers with four Venturi meters that are set up in parallel again, be evacuated to water seal with four Venturi meters that are set up in parallel at last, after tail gas emptying chimney is discharged.
Claims (5)
1, a kind of novel process for cooling of pyrogenic process zinc smelting is characterized in that: the zinc fume of pyrometallurgy of zinc output successively by a plurality of graphite rotators with independent cooling pool, is controlled different cooling pools and had different working temperatures.
2, novel process for cooling of pyrogenic process zinc smelting as claimed in claim 1 is characterized in that: the working temperature of above-mentioned different cooling pools is decided according to the condensing temperature of recovery metal.
3, novel process for cooling of pyrogenic process zinc smelting as claimed in claim 1 is characterized in that: above-mentioned different cooling pools adopt different heat-eliminating mediums according to the recovery metal.
4, novel process for cooling of pyrogenic process zinc smelting as claimed in claim 1 or 2, it is characterized in that: above-mentioned graphite rotator has three grades, wherein Dui Ying one-level cooling pool working temperature is decided heat-eliminating medium for plumbous according to the condensation point of lead, iron and copper, the working temperature of secondary cooling pool is decided heat-eliminating medium according to the condensing temperature of zinc be zinc, and the working temperature of three grades of cooling pools is decided heat-eliminating medium according to the condensing temperature of cadmium be zinc or cadmium.
5, novel process for cooling of pyrogenic process zinc smelting as claimed in claim 1 is characterized in that: adopt three grades of Venturi meters to take out in advance and wash above-mentioned zinc fume by last cooling pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101484666A CN100473733C (en) | 2007-08-30 | 2007-08-30 | Novel process for cooling of pyrogenic process zinc smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101484666A CN100473733C (en) | 2007-08-30 | 2007-08-30 | Novel process for cooling of pyrogenic process zinc smelting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101117666A CN101117666A (en) | 2008-02-06 |
| CN100473733C true CN100473733C (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101484666A Expired - Fee Related CN100473733C (en) | 2007-08-30 | 2007-08-30 | Novel process for cooling of pyrogenic process zinc smelting |
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| CN (1) | CN100473733C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029233B (en) * | 2019-03-18 | 2021-07-23 | 昆明理工大学 | Method for efficiently recovering elemental zinc from electric furnace zinc smelting tail gas |
| CN112522518A (en) * | 2020-12-01 | 2021-03-19 | 昆明理工大学 | Safe control and comprehensive recycling method for high-lead mercury-containing acid mud |
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2007
- 2007-08-30 CN CNB2007101484666A patent/CN100473733C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 密闭鼓风炉炼锌铅法在韶关冶炼厂的生产实践. 刘富如.中国有色冶金，第6期. 1981 |
| 密闭鼓风炉炼锌铅法在韶关冶炼厂的生产实践. 刘富如.中国有色冶金，第6期. 1981 * |
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| CN101117666A (en) | 2008-02-06 |
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Granted publication date: 20090401 Termination date: 20160830 |