CN103540768A - Integrated serpentine nickel element smelting process - Google Patents
Integrated serpentine nickel element smelting process Download PDFInfo
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- CN103540768A CN103540768A CN201310490039.1A CN201310490039A CN103540768A CN 103540768 A CN103540768 A CN 103540768A CN 201310490039 A CN201310490039 A CN 201310490039A CN 103540768 A CN103540768 A CN 103540768A
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Abstract
The invention aims to provide an integrated serpentine nickel element smelting process and is used for solving the problems of high consumption of ore smelting resources and low recovery rate of nickel products in the prior art. The process comprises the steps: (1) drying raw material serpentine ores, and then, enabling the raw material serpentine ores to enter a crusher from a feeding bin to obtain ore raw material residues; (2) continuously feeding the crushed ore raw material residues to a rotary kiln through a conveying belt to calcine, meanwhile, injecting a reductant, and preheating the rotary kiln to 800-1000 DEG C; (3) cooling a material clinker, and then, conveying the material clinker into a ball mill for ball milling, wherein the material clinker is calcined in the rotary kiln in the step (2) under a semi-smelting condition; (4) carrying out classification recovery treatment on the ball-milled material clinker. The integrated process provided by the invention is not only convenient and rapid, but also high in extracted ore tonnage; coal is used as the main smelting energy source, so that the consumption of resources is reduced, and the utilization ratio of the resources is increased; the process is simple in flow, energy-saving and environment-friendly and is a significant breakthrough in an ore smelting process.
Description
Technical field
The present invention relates to production technique, be specifically related to a kind of integrated serpentine nickel element smelting technology.
Background technology
Nickel is a kind of argenteous metal, there is good physical strength and ductility, infusibility is high temperature resistant, and there is very high chemical stability, the feature such as in air, be not oxidized, be used to manufacture stainless steel, High Nickel Steel and structural alloy steel, become the industry of development modern Aviation, national defense industry, set up the high-caliber material and cultural life of the mankind and the indispensable metal of modernization system.China's nickel industry is started in nineteen fifty-three, at Jinchuan Nickel Mine, be found, front China is considered as “Pin nickel state by the foreigner always ", some countries also take advantage of the occasion China to carry out nickel envelope tax, with this, restrict the development of China's modern industry, China is used domestic mineral raw material, and extraction Shi Cong Sichuan Province Huili County nickel ores starts.Nineteen fifty-nine, Sichuan Province can manage nickel minerals puts into production, and has stepped the exploitation of China nickel resources, utilizes the first step to establish solid basis for Chinese nickel resources ore smelting.
Serpentine is a kind of general name of moisture rich magnesium silicate mineral, from professional geologic prospect, find, Huili, Sichuan county is storing abundant serpentine ore, and reserves have surpassed 5,000,000,000 tons, a lot of places in China, 30 yuan/ton of serpentine ore valencys, be used for making the raw material of fused(calcium magnesium)phosphate magnesium, except this, there is no other use for it, and consumption is few and price is low, along with scientific and technical development, research finds that the organic element ratios such as a large amount of serpentines are nickeliferous, magnesium, gas-phase silica are higher.
In prior art, in the smelting technology of nickel element, ore is heated inhomogeneously, grinds insufficiently, and massfraction nickeliferous in the product that causes obtaining is low, and nickel recovery is low, and is difficult to the nickeliferous product that meticulous screening extracts.In addition, because ore major part is produced in remote districts, shipment distance is long, and the transportation cost bringing thus and difficulty all can increase; On the other hand, existing ore dressing facility disperses, and ore need cause dressing expenses with high through repeatedly screening and just can complete, and whole smelting cost is relatively high.
Summary of the invention
The object of the present invention is to provide integrated serpentine nickel element smelting technology, solve the problem that in prior art, ore smelting cost is high, nickel product recovery rate is low.
To achieve these goals, the technical solution used in the present invention is as follows:
Integrated serpentine nickel element smelting technology, comprises the following steps:
(1) raw material snake ore drying is entered to crusher by feeding warehouse, by the even pulverizing and jevigating of ore, obtain ore slag;
(2) the ore slag after grinding being fed to rotary kiln continuously through transport tape calcines, inject reductive agent simultaneously, after rotary kiln is preheated to 800 ℃-1000 ℃ for removing ore slag and reductive agent surface-moisture and crystal water, and virgin metal composition;
(3) after the material frit that burns till under semi-melting condition in rotary kiln by step (2) is cooling, deliver into ball mill and carry out ball milling;
(4) the material frit after ball milling is carried out to stage treatment, the Rhometal being reduced into is extracted from the material frit of discharging.
Particularly, in described step (1), ore carries out fragmentation by two crushers successively.In described step (2), reductive agent is carbonaceous material and solvent Wingdale.The type of cooling in described step (3) is for to carry out cooling by the cooling pond of water-cooled to material frit.In described step (4), stage treatment, for screening by grading machine and two magnetic separators successively, extracts Rhometal.
Further, described magnetic separator is respectively intensity magnetic separator and weak magnetic separator, and described material frit first carries out primary screening by intensity magnetic separator, then by weak magnetic separator, carries out postsearch screening.
The sand-like particle that the Rhometal diameter extracting is 2-3mm, and carry the slag of 1-2% secretly, the chemical composition Ni content weight ratio of Rhometal is that 18-22%, Fe content weight ratio are more than 35%, P content weight ratio is 0.015%, S content weight ratio is 0.45%.
Compared with prior art, the present invention has following beneficial effect:
(1) flow process of integral type of the present invention, charging, fragmentation, calcining, cooling, screen a step and complete, realized mass production, not only convenient and swift but also yield is large, the main energy sources of melting is coal, reduce the consumption of coal resources, electric power resource, ore resource, improved resource utilization.
(2) snake ore of the present invention carries out fragmentation by two crushers successively, fully broken, so that ore slag is calcined and is heated evenly in rotary kiln, after rotary kiln is preheated to 800 ℃-1000 ℃ for removing ore slag and reductive agent surface-moisture and crystal water, and virgin metal composition, reduction is fully.
(3) stage treatment of the present invention, for screening by grading machine and two magnetic separators successively, extracts Rhometal quality (containing Ni20% left and right) height, can directly be used as stainless raw materials for production, the refrigerant while also can be used as molten steel smelting.
(4) technical process of the present invention is simple, realization is convenient, energy-conserving and environment-protective, is once large breakthrough in ore smelting technique.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
Integrated serpentine nickel element smelting technology, comprises the following steps:
(1) raw material snake ore drying is entered to crusher by feeding warehouse, by the even pulverizing and jevigating of ore, obtain ore slag;
(2) the ore slag after grinding being fed to rotary kiln continuously through transport tape calcines, inject reductive agent simultaneously, after rotary kiln is preheated to 800 ℃-1000 ℃ for removing ore slag and reductive agent surface-moisture and crystal water, and virgin metal composition;
(3) after the material frit that burns till under semi-melting condition in rotary kiln by step (2) is cooling, deliver into ball mill and carry out ball milling;
(4) the material frit after ball milling is carried out to stage treatment, the Rhometal being reduced into is extracted from the material frit of discharging.
Particularly, in described step (1), ore carries out fragmentation by two crushers successively, and raw material snake ore powder is broken into the fine particle below 1mm.In described step (2), reductive agent is carbonaceous material and solvent Wingdale, and wherein carbonaceous material is pressed 3% weight ratio, and solvent Wingdale is mixed to join in ore slag by 2% weight ratio, feeds rotary kiln and carries out the calcining about 2 hours.The type of cooling in described step (3) is cooling for material frit being carried out by the cooling pond of water-cooled, until material frit, is cooled to after normal temperature, delivers into ball mill it is ground to 80-120 order left and right.In described step (4), stage treatment, for screening by grading machine and two magnetic separators successively, extracts Rhometal.
Further, described magnetic separator is respectively intensity magnetic separator and weak magnetic separator, and described material frit first carries out primary screening by intensity magnetic separator, then by weak magnetic separator, carries out postsearch screening.
The sand-like particle that the Rhometal diameter extracting is 2-3mm, and carry the slag of 1-2% secretly, the chemical composition Ni content weight ratio of Rhometal is that 18-22%, Fe content weight ratio are more than 35%, P content weight ratio is 0.015%, S content weight ratio is 0.45%.During because of steel-making, have good sweetening power, husky strong particle is conducive to continuous charging and melts fast as refrigerant material in steelmaking process.
According to above-described embodiment, just can realize well the present invention.
Claims (7)
1. integrated serpentine nickel element smelting technology, is characterized in that, comprises the following steps:
(1) raw material snake ore drying is entered to crusher by feeding warehouse, by the even pulverizing and jevigating of ore, obtain ore slag;
(2) the ore slag after grinding being fed to rotary kiln continuously through transport tape calcines, inject reductive agent simultaneously, after rotary kiln is preheated to 800 ℃-1000 ℃ for removing ore slag and reductive agent surface-moisture and crystal water, and virgin metal composition;
(3) after the material frit that burns till under semi-melting condition in rotary kiln by step (2) is cooling, deliver into ball mill and carry out ball milling;
(4) the material frit after ball milling is carried out to stage treatment, the Rhometal being reduced into is extracted from the material frit of discharging.
2. integrated serpentine nickel element smelting technology according to claim 1, is characterized in that, in described step (1), ore carries out fragmentation by two crushers successively.
3. integrated serpentine nickel element smelting technology according to claim 1, is characterized in that, in described step (2), reductive agent is carbonaceous material and solvent Wingdale.
4. integrated serpentine nickel element smelting technology according to claim 1, is characterized in that, the type of cooling in described step (3) is for to carry out cooling by the cooling pond of water-cooled to material frit.
5. integrated serpentine nickel element smelting technology according to claim 1, is characterized in that, in described step (4), stage treatment, for screening by grading machine and two magnetic separators successively, extracts Rhometal.
6. integrated serpentine nickel element smelting technology according to claim 5, it is characterized in that, described magnetic separator is respectively intensity magnetic separator and weak magnetic separator, and described material frit first carries out primary screening by intensity magnetic separator, then by weak magnetic separator, carries out postsearch screening.
7. according to the integrated serpentine nickel element smelting technology described in claim 2 or 3 or 4 or 6 any one, it is characterized in that, the sand-like particle that the Rhometal diameter extracting is 2-3mm, and carry the slag of 1-2% secretly, the chemical composition Ni content weight ratio of Rhometal is that 18-22%, Fe content weight ratio are more than 35%, P content weight ratio is 0.015%, S content weight ratio is 0.45%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911795A (en) * | 2018-09-05 | 2018-11-30 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A method of magnesium silico-calcium fertilizer is produced using mineral hot furnace melting asbestos tailings |
| CN109110836A (en) * | 2018-09-18 | 2019-01-01 | 云南达盖尔环保科技有限公司 | A kind of method and its application for extracting complex silicate salt as water purifying agent from serpentine |
| CN109161689A (en) * | 2018-09-17 | 2019-01-08 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A method of melting asbestos tailings extract heavy metal |
| CN109180277A (en) * | 2018-11-15 | 2019-01-11 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A method of Si, Ca, Mg, K fertilizer is produced using rotary kiln calcining serpentine |
| CN109369221A (en) * | 2018-11-15 | 2019-02-22 | 北京璞域环保科技有限公司 | A method of secondary nutrients are produced using rotary kiln calcining serpentine |
| CN114380626A (en) * | 2021-06-10 | 2022-04-22 | 若羌县圣地石棉尾料再利用科技开发有限公司 | Preparation method for extracting medium-trace element fertilizer by using asbestos tailings |
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| CN102921535A (en) * | 2012-11-07 | 2013-02-13 | 牛庆君 | Method for recycling gold from serpentine asbestos rock type asbestos tailings |
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| CN1827799A (en) * | 2006-03-24 | 2006-09-06 | 张昱 | Method for recovering nickel and cobalt from nickel oxide ore and nickel silicide ore |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911795A (en) * | 2018-09-05 | 2018-11-30 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A method of magnesium silico-calcium fertilizer is produced using mineral hot furnace melting asbestos tailings |
| CN108911795B (en) * | 2018-09-05 | 2021-06-22 | 北京璞域环保科技有限公司 | Method for producing magnesium-silicon-calcium fertilizer by melting asbestos tailings in submerged arc furnace |
| CN109161689A (en) * | 2018-09-17 | 2019-01-08 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A method of melting asbestos tailings extract heavy metal |
| CN109110836A (en) * | 2018-09-18 | 2019-01-01 | 云南达盖尔环保科技有限公司 | A kind of method and its application for extracting complex silicate salt as water purifying agent from serpentine |
| CN109180277A (en) * | 2018-11-15 | 2019-01-11 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A method of Si, Ca, Mg, K fertilizer is produced using rotary kiln calcining serpentine |
| CN109369221A (en) * | 2018-11-15 | 2019-02-22 | 北京璞域环保科技有限公司 | A method of secondary nutrients are produced using rotary kiln calcining serpentine |
| CN109369221B (en) * | 2018-11-15 | 2021-04-27 | 北京璞域环保科技有限公司 | Method for producing secondary element fertilizer by calcining serpentine in rotary kiln |
| CN114380626A (en) * | 2021-06-10 | 2022-04-22 | 若羌县圣地石棉尾料再利用科技开发有限公司 | Preparation method for extracting medium-trace element fertilizer by using asbestos tailings |
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Application publication date: 20140129 |