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Method for preparing raw material pellets in production of vanadium-nitrogen alloy

A vanadium-nitrogen alloy and raw material technology, which is applied in the field of preparing raw material balls in the production of vanadium-nitrogen alloys, can solve the problems of uneven composition of raw material balls, low ball forming efficiency, etc., to improve the final product grade, reduce the number of ball forming, Avoid the effect of apparent density inhomogeneity

Inactive Publication Date: 2012-05-23
ANYANG YUQIANXIN METALLURGY REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems such as uneven composition of raw material balls and low ball forming efficiency in the production of vanadium-nitrogen alloys, and provide a method for preparing raw material balls in the production of vanadium-nitrogen alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix 80Kg of ammonium metavanadate as a solid vanadium raw material and 10Kg of graphite as a solid reducing agent in a dry powder mixer for 40 minutes, then add water to a wet mixer and mix for 150 minutes as a liquid binder. The amount of liquid binder water added It is 3% of the total amount of ammonium metavanadate and graphite, and then through two adjustable-speed forming machines connected in series, raw material balls with an apparent density of 1.8-2.6 and good surface finish that meet the production needs of vanadium-nitrogen alloys are prepared.

Embodiment 2

[0020] Mix 70Kg of ammonium polyvanadate as a solid vanadium raw material and 10Kg of graphite as a solid reducing agent in a dry powder mixer for 50 minutes, then add water to a wet mixer and mix for 140 minutes as a liquid binder. The amount of liquid binder water added It is 4% of the total amount of solid vanadium raw material and solid reducing agent, and then through two adjustable speed molding machines connected in series, raw material balls with an apparent density of 1.8-2.6 and good surface finish that meet the production needs of vanadium nitrogen alloys are prepared.

Embodiment 3

[0022] Mix 60Kg of vanadium pentoxide as a solid vanadium raw material and 10Kg of graphite as a solid reducing agent in a dry powder mixer for 40-70 minutes, and then add an aqueous solution of polyvinyl alcohol with a mass percentage concentration of 3% in a wet mixer as a liquid binder The agent was mixed for 105 minutes, and the amount of liquid binder water added was 6% of the total amount of solid vanadium raw material and solid reducing agent, and then two adjustable-speed forming machines connected in series prepared the apparent vanadium-nitrogen alloy production requirements. Raw material balls with a density of 1.8-2.6 and good surface finish.

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PUM

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Abstract

The invention relates to a method for preparing material pellets in the production of a vanadium-nitrogen alloy. The method comprises the following steps of: mixing a solid vanadium raw material with a solid reducer in a proportion of 8: (1-3): 1 in a dry powder mixing machine for 40-70min, and then adding a liquid binder to a wet mixing machine and mixing for 90-150min, wherein the addition amount of the liquid binder is 3-8 percent of the total amount of the solid vanadium raw material and the solid reducer; and then pressing and pelletizing by two speed-adjustable forming machines which are connected in series. By carrying out dry mixing on the raw material before wet mixing, the uniformity of the raw material is greatly increased, and the pelletizing quality and the product grade of the finished product are improved; and qualified pellets can be obtained in a such way that the two forming machines work in series at an once working process, thus a continuous working mechanism is formed and the pelletizing efficiency is increased.

Description

technical field [0001] The invention belongs to the technical field of vanadium-nitrogen alloy production, and in particular relates to a method for preparing raw material balls in the production of vanadium-nitrogen alloy. Background technique [0002] Vanadium nitrogen alloy (also known as vanadium nitride) is an efficient additive in the iron and steel industry. It is known as "the monosodium glutamate of the iron and steel industry". It is gradually forming a ferroalloy with the most development prospects. As a new product, its production Technology has become an inevitable trend in the vanadium industry. The production technology of vanadium nitrogen alloy mainly consists of two parts: raw material ball forming technology and smelting technology. [0003] There are two main methods of forming traditional vanadium-nitrogen alloy raw materials: one is to add vanadium raw materials, solid reducing agent, and liquid binder together into the wet mixer, after a long period of...

Claims

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Application Information

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IPC IPC(8): C22C29/16C22C1/04C01B21/06
Inventor 郭官存张树兵张庆军
Owner ANYANG YUQIANXIN METALLURGY REFRACTORY