CN1012379B - Microwave desulfurization plasma smelting of nickel matte - Google Patents
Microwave desulfurization plasma smelting of nickel matteInfo
- Publication number
- CN1012379B CN1012379B CN 88103230 CN88103230A CN1012379B CN 1012379 B CN1012379 B CN 1012379B CN 88103230 CN88103230 CN 88103230 CN 88103230 A CN88103230 A CN 88103230A CN 1012379 B CN1012379 B CN 1012379B
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- nickel
- plasma
- smelting
- copper
- calcining
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Abstract
The present invention relates to a method for directly acquiring matte nickel via microwave desulphurization plasma smelting. The method omits a converter blowing procedure in traditional metallurgical techniques for copper and nickel oxidized ores and adopts a microwave desulphurization plasma smelting method for directly acquiring the matter nickel and element sulfur. The matte nickel prepared by the method has a grade of 50 to 60% which is higher than that of traditional processes, and the high nickel content matter also has the advantages of high smelting efficiency, little construction investment, low nickel containing in dregs and high metal recovery rate; owing to basically generate no sulfur dioxide in the acquirement processes, the method basically eliminates environmental pollution.
Description
Microwave desulfurization plasma smelting of nickel matte has related to a kind of nonferrous metallurgy novel method.
The present age, metallurgy obtained the up-to-date flow process of high ice nickel shown in Figure of description 1.Obtain nickeliferous about 30% height ice nickel after copper, Ni sulphide mine drying, the melting of flash stove, and then enter down the step processing.Obviously obtain also will obtaining high ice nickel behind the low nickel matte except the melting of intercalative electrode flash stove in the smelting technology through bessemerizing, therefore initial cost is higher, because flash roasting refining and the waste nickel content height of bessemerizing cause the grade of low, the high ice nickel of metal direct yield also lower.
The objective of the invention is to get rid of from traditional technical process and bessemerize operation, once obtain the higher height ice nickel of grade with plasma melting, cut down the consumption of energy and initial cost, it is nickeliferous to reduce slag, improves metal recovery rate.
Technical process of the present invention is shown in Figure of description 2.Copper-nickel concentrate heated by microwave device or fluidizing reactor processing obtain calcining and directly enter high-temperature plasma stove roasting refining, obtain nickeliferous 50～60% height ice nickel, descend the step processing with ordinary method again.The flue gas of heated by microwave device desulfurization, process gas, solid, liquid separator are handled and are obtained elementary sulfur, hydrogen G﹠W.Behind the flue gas dust collection that fluidized bed roasting is handled, send to and produce sulfuric acid.
The process and the technical qualification of plasma body roasting refining are as follows:
1. furnace type structure is shown in Figure of description 3.(1) plasma electrical source, (2) spray gun, (3) reaction tower, (4) molten bath, (5) flue.
2. handled material component:
Nickel (Ni), copper (Cu), cobalt (Co), sulphur (S), iron (Fe), silicon-dioxide (SiO
2) 3～10%, 2～8% 0.15% ±, 20～27%, 30～40%, 7～10% calcium oxide (CaO) magnesium oxide (MgO)
2～5%????2～5%
3. smelting program: baking oven is to furnace temperature to 1500 ℃, striking, sulfur-bearing is squeezed into spray gun at 4～8% calcining and the quartzite that (calculates through metallurgy) in right amount, in reaction tower temperature be in 5000～6000 ℃ the plasma in the temperature area moment promptly molten, finish chemical reaction simultaneously and enter and obtain high nickel and the slag iced respectively after clarification separates in the roasting pond.In case of necessity slag is carried out dilution and handle, tail gas needs recovery waste heat.
The main chemical reactions formula is as follows:
4. smelting technique condition: calcining sulfur-bearing 4～8%, granularity are negative 0.09 millimeter, 5000～6000 ℃ of warm area in the plasma (being reaction tower) temperature, 1600～1800 ℃ of slag temperature.
Compare the present invention and have following advantage and positively effect with the existing flow process of bessemerizing:
1. ice the metal direct yield height of nickel from concentrate to obtaining height, now be compared as follows:
Nickel (Ni), copper (Cu), cobalt (Co), sulphur (S)
Flash stove-bof process 93.78% 85.32% 55% 93.9%
Direct yield
More than direct yield of the present invention＞98% 95～97% 70% 98%;
2. bessemerize operation, building equipment investment saving about 40% owing to having reduced.
3. sulphur directly reclaims with the elementary sulfur form, in plasma melting, does not produce carbonic acid gas basically, fundamentally to have solved atmospheric pollution;
4. concentrate the plasma melting high-temperature zone, and electric energy does not have reactive power consumption basically, and current efficiency height, melting were finished in moment, melting cycle is short, efficient is high, and fume amount is little, the also low in fact not high effect of energy consumption of having brought of the heat of taking away;
5. can realize full automatic control, reduce labour intensity.
Embodiment
Handled concentrate composition: nickel (Ni) 5%, copper (Cu) 4%, cobalt (Co) 0.1%, sulphur (S) 25%, iron (Fe) 35%, silicon-dioxide (SiO
2) 10%, calcium oxide (CaO), magnesium oxide (MgO) 5%.
Adopt 600 ℃ of microwave heater desulfurization temperatures, 0.076 millimeter of granularity, calcining sulfur-bearing 3% after the desulfurization, calcining mixes with silicon-dioxide after spray gun is squeezed into arc district in the reaction tower, reaction is promptly finished moment, melt clearly in the molten bath slidingly separates, 2000 ℃ of bath temperatures, the height ice nickel grade 56% that obtains, the direct yield 99% of nickel.
Claims (2)
1, a kind of plasma metallurgy directly obtains the method for high ice nickel, and copper, Ni sulphide mine obtain calcining by pre-treatment and desulfurization process, and calcining obtains high ice nickel through smelting again, it is characterized in that:
(1) smelting process and technical qualification are: the plasma metallurgy stove is through baking oven to 1500 ℃ striking, with sulfur-bearing 4～8%, it is that arc district in the plasma in 5000～6000 ℃ the reaction tower, material moment is promptly molten and finish and enter the molten bath clarification behind the chemical reaction and separate that negative 0.09 millimeter calcining of granularity and quartzite are squeezed into temperature
(2) nickeliferous (Ni) 3～10% of handled concentrate, copper (Cu) 2～8% sulphur (S) 20～27%.
2, metallurgical method as claimed in claim 1 is characterized in that handled concentrate composition is: nickel (Ni) 5%, copper (Cu) 4%, cobalt (Co) 0.1%, sulphur (S) 25%, iron (Fe) 35%, silicon-dioxide (SiO
2) 10%, calcium oxide (CaO) 5%, magnesium oxide (MgO) 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103230 CN1012379B (en) | 1988-05-24 | 1988-05-24 | Microwave desulfurization plasma smelting of nickel matte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103230 CN1012379B (en) | 1988-05-24 | 1988-05-24 | Microwave desulfurization plasma smelting of nickel matte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031256A CN1031256A (en) | 1989-02-22 |
| CN1012379B true CN1012379B (en) | 1991-04-17 |
Family
ID=4832502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103230 Expired CN1012379B (en) | 1988-05-24 | 1988-05-24 | Microwave desulfurization plasma smelting of nickel matte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012379B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07201144A (en) * | 1993-12-28 | 1995-08-04 | Nippon Conlux Co Ltd | Information recording and reproducing device |
| CN1053705C (en) * | 1996-09-24 | 2000-06-21 | 徐有生 | Cobalt-bearing oxidized ore treatment by microwave-heat plasma |
| CN1067113C (en) * | 1998-08-08 | 2001-06-13 | 徐有生 | Pollution-free fire smelting method for Cu-Ni sulphide mine |
-
1988
- 1988-05-24 CN CN 88103230 patent/CN1012379B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1031256A (en) | 1989-02-22 |
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