Title:
METHOD FOR PRODUCING MIXED SLAG CONTAINING NICKEL AND IRON
Document Type and Number:
WIPO Patent Application WO/2019/071797
Kind Code:
A1
Abstract:
A method for producing mixed slag containing nickel and iron, comprising the following steps: S1. furnace slag mixing: adding nickel smelting slag into a reaction apparatus, and adding one or more of lead smelting slag, blast furnace slag, steel slag, and ferro-alloy slag to form mixed slag; heating the mixed slag to a molten state, and simultaneously adding one or more of a copper oxide mineral, a copper sulfide mineral, a nickel oxide mineral, a nickel sulfide mineral, and a copper-containing material; uniformly mixing same, using the mixture as reaction slag, and monitoring the reaction slag in real time; moreover, performing regulation and control to enable the mixed reaction slag to satisfy both condition a and condition b, the condition a being that the temperature of the reaction slag is controlled to range from 1050°C to 1450°C, and the condition b being that a alkalinity CaO/SiO2 ratio of the reaction slag is controlled to range from 0.15 to 1.5; obtaining reacted slag; and S2. performing separation and recycling.
Inventors:
ZHANG LI (CN)
ZHANG WU (CN)
ZHANG WU (CN)
Application Number:
PCT/CN2017/115652
Publication Date:
April 18, 2019
Filing Date:
December 12, 2017
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
C22B7/04; C22B11/02; C22B13/02; C22B15/00; C22B19/30; C22B23/02; C22B26/10; C22B58/00; C22B30/06
Domestic Patent References:
| WO2015143574A1 | 2015-10-01 |
Foreign References:
| CN104342560A | 2015-02-11 | |||
| CN106191344A | 2016-12-07 | |||
| CN104496184A | 2015-04-08 | |||
| CA2270850A1 |
Attorney, Agent or Firm:
BEIJING EASY JOY SOON IP AGENT LTD. (CN)
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