A kind of preparation method of ferronickel silicate powder pellet
A technology for nickel silicate and powder pellets, which is applied in the field of preparation of nickel silicate iron ore powder pellets, can solve the problems of high energy consumption, insufficient production efficiency and product quality, serious pollution of coal combustion agents, etc. short process effect
Inactive Publication Date: 2014-10-29
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0005] The commonly used sintering and granulation method of nickel-ironosilicate ore powder is the blast method and sintering with combustion agent. The sintering process has high energy consumption, serious pollution of coal-based combustion agent, high labor intensity, harsh production conditions, and low production efficiency and product quality. have serious deficiencies
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Embodiment Construction
[0047] The amount of chemical substances used in the preparation is determined according to the preset range, with kilograms and liters as measurement units.
[0048] Drying and sintering of nickel-iron silicate powder pellets is carried out in a microwave heating furnace, which is completed in a mullite container, on a magnetic ring track, and under a uniform heating state;
[0049] The microwave heating furnace 1 is a vertical cylinder, the upper part is a furnace cover 3, the lower part is a console 2, and the outside is surrounded by a microwave heater 4; the inner bottom of the microwave heating furnace 1 is a workbench 5, on which a magnetic ring Rail 6, install mullite container trolley 7 on the magnetic ring track 6, in the mullite container trolley 7 is nickel-iron silicate ore powder pellet 8; , indicator light 10, power switch 11, microwave controller 12, heating temperature controller 13, magnetic ring track controller 14; Controller 14 controls.
[0050] figur...
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Abstract
The invention relates to a preparation method for a nickel iron silicate ore powder pellet. According to the preparation method, based on the characteristics of nickel iron silicate ore powder, quicklime and water are added, and ball milling, sieving, pressing and granulation with a die and microwave drying and sintering are carried out to process the nickel iron silicate ore powder so as to allow the nickel iron silicate ore powder to meet melting requirements; process flow of the preparation method is short, and microwave drying and sintering are energy saving and environment friendly; after drying, water content in the nickel iron silicate ore powder pellet is no more than 0.5%, and particle strength is up to 7 to 10 MPa. The preparation method is suitable for large-scale production and is an ideal preparation method for the nickel iron silicate ore powder pellet.
Description
technical field [0001] The invention relates to a method for preparing nickel-iron silicate powder pellets, which belongs to the technical field of non-ferrous metal nickel-iron ore powder drying and sintering to make pellets. Background technique [0002] Nickel is a non-ferrous metal material, mainly used as an alloy additive for stainless steel; due to the rapid development of the stainless steel industry, the demand for metallic nickel is increasing, and due to the increasingly scarce resources of nickel sulfide ore, the main source of nickel is ferronickel silicate ore powder ; Nickel-ironosilicate ore powder reserves are abundant and will be the main source of nickel in the future. The beneficiation and smelting of nickel-ironosilicate ore powder has become an important research topic. [0003] The use of nickel-ironosilicate ore powder to smelt nickel pig iron has brought about major changes in the raw materials for stainless steel production. The low-cost use of nick...
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IPC IPC(8): C22B1/14
Inventor 陈津郝赳赳赵晶张猛冷宪国林原生张又兴
Owner TAIYUAN UNIV OF TECH