CN1039063A - New processing technology for high ice nickel - Google Patents

New processing technology for high ice nickel Download PDF

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Publication number
CN1039063A
CN1039063A CN 88105087 CN88105087A CN1039063A CN 1039063 A CN1039063 A CN 1039063A CN 88105087 CN88105087 CN 88105087 CN 88105087 A CN88105087 A CN 88105087A CN 1039063 A CN1039063 A CN 1039063A
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China
Prior art keywords
nickel
high ice
processing technology
new processing
ice nickel
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Pending
Application number
CN 88105087
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Chinese (zh)
Inventor
王臣
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FUSHUN STEELWORKS
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FUSHUN STEELWORKS
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Publication date
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Priority to CN 88105087 priority Critical patent/CN1039063A/en
Publication of CN1039063A publication Critical patent/CN1039063A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the novel process that high ice nickel is handled, belong to the Metal smelting technology, smelting stainless steel and what contain that nickel steel adopts is electrolytic nickel, this smelting process wastes energy and the cost height.The present invention adopts the non-vacuum induction furnace decopper(ing) and handles through desulfurization, height ice nickel is become the ferronickel that meets steel-making requirements be used for smelting stainless steel, is characterized in saving the energy, reduces cost.

Description

New processing technology for high ice nickel
The invention belongs to the Metal smelting technology, is a kind of novel process of handling high ice nickel.
Domestic smelting stainless steel and other nickel steel all adopt highly purified electrolytic nickel, the smelting process of electrolytic nickel is at first to obtain high ice nickel by the nickel minerals powder after the flotation through roasting → electrosmelting → blowing than more complicated, high ice nickel adopts layering smelting process or mill float glass process to carry out copper-nickel separation again, form anode nickel again, but, containing nickel steel with electrolytic nickel smelting stainless steel and other is a kind of great waste, and does not still have a way with nickel-iron smelting is domestic.
The objective of the invention is to solve smelting stainless steel and other and contain nickel steel and use the electrolytic nickel problems such as cost height that waste energy, a kind of novel process of directly smelting into ferronickel from height ice nickel is provided from economic angle.
Technological process of the present invention can be summarized in following steps:
1. height is iced the nickel fragmentation and 2. delivered to decopper(ing) in the non-vacuum induction furnace, used slag charge is sodium sulphite (Na 2S) 3. bottom ingot casting and 4. desulfurization of fragmentation, ingot casting.
Sodium sulphite (Na 2S) through processed, its degree of dehydration reaches each hundred kilograms and obtains 75 kilograms of dehydration sulfureted sodium (Na in (kg) left and right sides 2S);
What desulfurization was adopted is that lining electroslag furnace or electric furnace are arranged;
It is to use the graphite matter that is knotted into by Graphite Powder 99 and tar as furnace lining that lining electroslag furnace or electric furnace are arranged.
In the sweetening process, the slag charge proportioning is calcium oxide (CaO): Calcium Fluoride (Fluorspan) (CaF 2): firebrick piece=5: 2: 1, the slag charge amount is worked as with processing material (high ice nickel) heavy phase.
The present invention utilizes the non-vacuum induction furnace decopper(ing), and copper can take off to below 2.00%, and utilizing has lining electroslag furnace or electric furnace desulfurization, and sulphur can take off to below 0.5%.Because high ice nickel adopts above-mentioned technology to obtain meeting the ferronickel of steel-making requirements, and can be directly used in steel-making, therefore can reduce steel-making cost greatly, saves the energy, and found an effective way for smelting stainless steel.
Accompanying drawing is a process flow sheet of the present invention.
In the accompanying drawing, high ice nickel is delivered in the non-vacuum induction furnace through after the fragmentation, adds sodium sulphite (Na simultaneously 2S), at a certain temperature, the way of employing plumbago crucible operate continuously reaches and removes contained copper in the high ice nickel.The sodium sulphite that adopts must be through processed, and its degree of dehydration obtains the dehydration sulfureted sodium in the 75kg left and right sides with each hundred kilograms and is advisable.Dehydration postcure sodium (Na 2S) consumption accounts for about 20% of high ice nickel weight; The high ice of dress nickel along with fusing, is treated to add after fusion sodium sulphite moisture content purifies high-power again earlier.Smelting temperature will be controlled at below 1000 ℃, and after decopper(ing) finished, slag was advisable with blood red, and nickel liquid and slag all injected ingot mould, be divided into upper and lower two-layerly after the cooling, the compound of the cupric sulfide-sodium sulphite on upper strata is removed, remaining lower floor ingot casting changes next step over to.
With the fragmentation of the ice of the height behind decopper(ing) nickel ingot casting, be put into lining electroslag furnace or electric furnace then and carried out desulfurization, it is to adopt graphite matter as furnace lining.It is formed by Graphite Powder 99 and tar knotting, and the slag charge proportioning is calcium oxide (CaO): Calcium Fluoride (Fluorspan) (CaF 2): firebrick piece=5: 2: 1, the quantity of slag and processing material (high ice nickel) heavy phase is worked as.Adopt FeSi piece and FeSi powder to carry out deoxidation, adopting skims and make new slag method increases the quantity of slag, until sulphur is taken off qualified till.In case of necessity, can adopt powder-spraying intensified desulfurization, promptly spray into calcium oxide (CaO): Calcium Fluoride (Fluorspan) (CaF 2The pulvis of)=4: 1, straying quatity 250 kg/ton adopt argon gas or nitrogen to spray into, and the pressure that dusts is 3 pressure.
Sulphur is with Ni in the high ice nickel 3S 2, Cu 2S, forms such as FeS, CoS exist, and employing CaO powder decopper(ing) generates CaS and is dissolved in the slag, and this method is better than roasting method, does not have SO 2Effusion, can avoid polluting.Based on this, similar with steel desulfurization, have following reaction formula:
The height ice nickel major ingredient of handling through the present invention is:
Alloying element (%): S P Fe Cu Ni Si
Before high ice nickel is handled: 22.0-4/5 〉=8 58/65-
High ice nickel is handled the back: surplus the 0.004/0.5 0.04 〉=2 75,/91 5/12
Height ice nickel ingot after this processing can satisfy steel-making requirements, and replace electrolytic nickel to be used for steel-making, and the rate of recovery of nickel reaches more than 85%.

Claims (5)

1, new processing technology for high ice nickel is characterized in that it is through following step:
1) height is iced the nickel fragmentation;
2) deliver to decopper(ing) in the non-vacuum induction furnace, slag charge is sodium sulphite (Na 2S);
3) bottom ingot casting and broken;
4) desulfurization, ingot casting.
2, according to the described new processing technology for high ice nickel of claim 1, it is characterized in that in the decopper(ing) slag charge sodium sulphite (Na 2S) through processed, its degree of dehydration reaches each hundred kilograms and obtains 75 kilograms of dehydration sulfureted sodium (Na in the left and right sides 2S).
3, according to claim 1 or 2 described new processing technology for high ice nickel, what it is characterized in that the desulfurization employing is that lining electroslag furnace or electric furnace are arranged.
4, according to the described new processing technology for high ice nickel of claim 3, it is characterized in that having lining electroslag furnace or electric furnace is to use the graphite matter that is knotted into by Graphite Powder 99 and tar as furnace lining.
5,, it is characterized in that used slag charge proportioning is calcium oxide (CaO) in the desulfurization: Calcium Fluoride (Fluorspan) (CaF according to the described new processing technology for high ice nickel of claim 4 2): firebrick piece=5: 2: 1, the slag charge amount is worked as with processing material (high ice nickel) heavy phase.
CN 88105087 1988-07-07 1988-07-07 New processing technology for high ice nickel Pending CN1039063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 88105087 CN1039063A (en) 1988-07-07 1988-07-07 New processing technology for high ice nickel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 88105087 CN1039063A (en) 1988-07-07 1988-07-07 New processing technology for high ice nickel

Publications (1)

Publication Number Publication Date
CN1039063A true CN1039063A (en) 1990-01-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 88105087 Pending CN1039063A (en) 1988-07-07 1988-07-07 New processing technology for high ice nickel

Country Status (1)

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CN (1) CN1039063A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105177307A (en) * 2015-09-06 2015-12-23 中南大学 Method for recycling copper-nickel-cobalt from low grade nickel matte through abrasive flotation separation
CN106636613A (en) * 2016-11-16 2017-05-10 中南大学 Preparation method of high-grade matte nickel oxidized calcined sand
CN107245643A (en) * 2017-04-19 2017-10-13 广西盛隆冶金有限公司 A kind of sea sand ore deposit and lateritic nickel ore preprocess method
CN111394597A (en) * 2020-04-01 2020-07-10 河套学院 A method for nickel-containing sludge sulfidation roasting-alkaline smelting to separate nickel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105177307A (en) * 2015-09-06 2015-12-23 中南大学 Method for recycling copper-nickel-cobalt from low grade nickel matte through abrasive flotation separation
CN106636613A (en) * 2016-11-16 2017-05-10 中南大学 Preparation method of high-grade matte nickel oxidized calcined sand
CN107245643A (en) * 2017-04-19 2017-10-13 广西盛隆冶金有限公司 A kind of sea sand ore deposit and lateritic nickel ore preprocess method
CN111394597A (en) * 2020-04-01 2020-07-10 河套学院 A method for nickel-containing sludge sulfidation roasting-alkaline smelting to separate nickel

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