Method for producing manganese alloy

A production method and technology of manganese alloys, applied in the production of manganese alloys and high-purity manganese alloys, can solve the problems of environmental pollution and high energy consumption, and achieve the effects of protecting the environment, reducing energy consumption, and improving labor productivity

Inactive Publication Date: 2009-10-21
CHINA IRON & STEEL RES INST GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a production method of manganese alloys, which solves the p...

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  • Method for producing manganese alloy

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Embodiment 1

[0023] Use electrolytic manganese 1000kg (Mn: 99.8%, C: 0.01%, S: 0.02%, P: 0.002%, Si: 0.008%), and 24kg alkaline sodium silicate solution (modulus 3.4, Baume degree 40) together Put into the JAC350A mixer and stir for 20 minutes. After the evenly stirred material goes through the belt conveyor to the hoist, it is evenly added to the GY520-150 high-pressure ball pressing machine (pre-pressing 15kw, main machine 55kw, main machine pressure and speed are adjusted according to the material into balls) , After pre-pressing, the pressed pellets are screened by the screen, and the qualified pellets are transported into the material box through the belt conveyor, and the underscreen material is re-entered into the briquette machine for pressing through the belt and the elevator. The material box containing the pellets is divided into two batches (each 500kg is a batch) into the hot air circulation oven, dried at 160°C for 20 minutes, and then taken out of the oven to obtain a residua...

Embodiment 2

[0026] Use electrolytic manganese 620kg (Mn: 99.8%, C: 0.01%, S: 0.02%, P: 0.002%, Si: 0.008%), scrap steel scrap 380kg (Mn: 0.58%, C: 0.03%, S: 0.004%, P : 0.01%, Si: 0.018%), mixed with 20kg alkaline sodium silicate solution (modulus 3.4, Baume degree 40), 10kg silica sol (SiO 2 Concentration 30%) put into JAC350A type mixer and stir for 20 minutes, put into the 20T ball forming machine designed by our company evenly through the conveying equipment, and dry once every 500kg batch of metal manganese pellets, drying temperature 105 ℃, time 3 After hours, the pellets were taken out to obtain pellets with a residual moisture content of 0.8% and a required strength. After the temperature dropped to room temperature, the composition of the manganese pellets was analyzed, and the qualified pellets were packaged and put into storage. The composition of this metal manganese ball is as follows:

[0027] Mn: 60.3%, C: 0.035%, S: 0.025%, P: 0.01%, Si: 0.015%, iron balance

Embodiment 3

[0029] Use electrolytic manganese 860kg (Mn: 99.8%, C: 0.01%, S: 0.02%, P: 0.002%, Si: 0.008%), scrap steel scrap 140kg (Mn: 0.37%, C: 0.05%, S: 0.008%, P: 0.01%, Si: 0.025%), add 25kg alkaline sodium silicate solution (modulus 3.4, Baume degree 40), 5kg aluminum hydroxide gel (aluminum hydroxide concentration 6%), polyvinyl alcohol 1kg Put them together into JAC350A mixer and stir for 20 minutes, then evenly put them into GY520-150 high-pressure briquette machine for pressing through the conveying equipment, and dry the pellets that pass the screening system every 500kg batch at 200°C for 15 minutes Finally, the pellets were taken out, the residual moisture was measured to be 0.5%, and the strength of the pellets reached the required strength. After the temperature dropped to room temperature, the composition of the manganese pellets was analyzed, and the qualified pellets were packed and put into storage. The composition of this metal manganese ball is as follows:

[0030] ...

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Abstract

The invention relates to a method for producing a manganese alloy, which belongs to the technical field of ferroalloy production. The process comprises the following steps: adopting powdered or granular electrolytic manganese and pure iron powder or pure scrap iron as raw materials, wherein the electrolytic manganese accounts for 60 to 100 weight percent and the balance is Fe; adding a bonding agent of which the weight is 0.5 to 10 percent of that of the raw materials; sufficiently stirring the raw materials and the bonding agent evenly by a stirring machine; pressing the materials into balls by a ball press of which the pressure is not less than 20 T; drying the manganese alloy balls obtained by pressing for 15 to 25 minutes at a temperature of between 80 and 250 DEG C to obtain manganese alloy ball agglomerations of which the residual moisture is not more than 3 percent; and detecting the components and the strength of the ball agglomerations, and packaging the ball agglomerations for storage according to requirements. The method has the advantages of directly obtaining the manganese alloy with bright and clean surface, high strength and appropriate components.

Description

technical field [0001] The invention belongs to the technical field of ferroalloy production, and in particular relates to a production method of manganese alloy, which produces high-purity manganese alloy for steelmaking, and the production process can save energy. technical background [0002] With the development of the iron and steel industry, saving resources, protecting the environment, reducing costs, and promoting economic growth are strategic guidelines for implementing the scientific development concept and maintaining sustainable economic and social development in our country. [0003] Manganese is one of the indispensable alloying elements in steel. In modern steelmaking, high-purity manganese alloys are more and more widely used as deoxidizing and desulfurizing agents and alloying elements. At present, high-purity manganese alloys mainly include electrolytic manganese, metal manganese and micro-carbon ferromanganese and so on. However, electrolytic manganese is...

Claims

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Application Information

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IPC IPC(8): C22C22/00C22C1/04
Inventor 盛国大刘浏陈卫文殷小东杨勇蒋伟章兼培吴伟
Owner CHINA IRON & STEEL RES INST GRP
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