Chronium-nickel alloy element electric furnace smelting recovery method from stainless steel dedusting ash
A technology of electric furnace smelting and recycling method, applied in the field of nickel alloy element smelting and recycling in electric furnace, and chromium in stainless steel dust, can solve the problems of high recycling cost, waste of physical heat, long smelting time, etc., to reduce smelting cost, reduce pollution, The effect of reducing scrap loading
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0027] In this embodiment, 160 tons (160 tons refers to the nominal capacity) of all scrap steel in an electric furnace is smelted with stainless steel dust removal ash. The smelting in this embodiment is 304 stainless steel, and 167 tons of raw materials are added, including 83.62 tons of high-carbon ferrochrome and 23.58 tons of returned materials. Carbon powder 3.7 tons, carbon steel scrap 15.4 tons chromium-nickel pig iron 41.38 tons electrolytic nickel 4.05 tons dust removal ash ball 14 tons.
[0028] (1) Preparation of stainless steel dust removal ash mixture
[0029] Add 4%-6% water and 3%-5% binder to stainless steel dust with nickel ≥ 1.9%, chromium ≥ 10.0%, and iron ≥ 30%, and then mix to form a mixture;
[0030] (2) Pressure ball
[0031] Press the above mixture into balls with a ball press machine, the particle size of the balls is φ80mm, and dry the pressed balls naturally until the water content is less than 3.0%;
[0032] (3) Canning
[0033] Add stainless st...
Embodiment 2
[0041] In this embodiment, 160 tons of electric furnace semi-hot molten iron is smelted with stainless steel dedusting ash. The smelting in this embodiment is 316 stainless steel. The raw materials added include 76.9 tons of pretreated molten iron, 83.8 tons of scrap steel, of which 39.5 tons are returned, high-carbon chromium 33.7 tons of iron, 10.6 tons of sintered nickel, and 9.8 tons of dust balls.
[0042] (1) Preparation of stainless steel dust removal ash mixture
[0043] Add 4%-6% water and 3%-5% binder to stainless steel dust with nickel ≥ 1.9%, chromium ≥ 10.0%, and iron ≥ 30%, and then mix to form a mixture;
[0044] (2) Pressure ball
[0045] Press the above mixture into balls with a ball press machine, the particle size of the balls is φ100mm, and dry the pressed balls naturally until the water content is less than 3%;
[0046] (3) Canning
[0047] Add stainless steel dust-removing ash balls during batching, load 83.6 tons of scrap steel, and put the dust-remov...
Embodiment 3
[0053] This embodiment is a 20-ton electric furnace (nominal capacity of 20 tons) with all steel scrap and stainless steel dust removal ash smelting. What this embodiment smelts is 304 stainless steel, and 22.6 tons of raw materials are added, of which 16.5 tons are returned to scrap steel, 3.8 tons of chromium-nickel pig iron, high carbon 2.3 tons of ferrochrome.
[0054] (1) Preparation of stainless steel dust removal ash mixture
[0055] Add 4%-6% water and 3%-5% binder to stainless steel dust with nickel ≥ 2.0%, chromium ≥ 10.0%, and iron ≥ 30%, and then mix to form a mixture;
[0056] (2) Pressure ball
[0057] Press the above mixture into balls with a ball press machine, the particle size of the balls is φ20mm, and dry the pressed balls naturally until the water content is less than 3%;
[0058] (3) Canning
[0059] Add stainless steel dedusting ash balls when batching, the raw material loaded is 22.6 tons, the ash balls loaded into the division are 2% of the raw mate...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information

- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com