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Method for producing forsterite sand-containing gunning material for steel ladles

A kind of magnesia olive sand, the technology of manufacturing method is applied in the direction of manufacturing tools, casting equipment, casting melt containers, etc., to achieve the effect of improved fire resistance, simple method and easy implementation

Inactive Publication Date: 2010-03-17
YINGKOU CHENXING REFRACTORY MATERIAL
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AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, the purpose of the present invention is to provide a method for manufacturing ladle lining gunning material synthesized by magnesia and magnesia olive sand according to technical indicators; to solve the problems existing in the use of existing gunning materials

Method used

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Embodiment 1

[0045] Take 3000kg of magnesia, send it to the jaw crusher for crushing, and then pass through the roller crusher for crushing; then pass through the disc vibrating screen to sieve into magnesia with a particle size of 3-1mm and 1-0mm for later use. . Get 6000kg of magnesia olive sand, use the above-mentioned equipment and process to make specifications of magnesia olive sand with two specifications of 3-1mm and 1-0mm for later use. Get 3000kg of magnesia and 5000kg of magnesia olivine sand, and grind them into 0.045mm magnesia fine powder and magnesia olivine sand fine powder with pendulum mill respectively. Then, the magnesia grain size material of various specifications, the magnesia olive sand grain size material and the two kinds of fine powder materials are respectively mixed according to the weight ratio to form a mixture. Add 500kg of 3-1mm magnesia sand grain size material into 300kg3-1mm magnesia grain size material. Mix in a screw mixer for 5 minutes. Add 500kg o...

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Abstract

The invention discloses a method for producing a gunning material for steel ladles, in particular to a method for producing a forsterite sand-containing gunning material for steel ladles. The invention adopts the following technical scheme: magnesia and forsterite sand are used as main raw materials and the main raw materials are crushed and then mixed to prepare mix-grained materials; and bondingagents and accelerating agents are added into the mix-grained materials to be fully stirred to prepare the gunning material. The method is simple and easy to implement. As the forsterite sand is added in the production method, the production cost is greatly reduced. In addition, as the forsterite sand has high melting point, no crystal transformation occurs from the normal temperature to the melting point, and the crystal form is quite stable, the fire resistance of the produced gunning material is greatly improved. Besides, the added bentonite and fire clay, which are used as the bonding agents, and sodium tripolyphosphate, sodium silicate and the like enable the bonding strength of the gunning material and a lining to be greatly improved and bonding to be firm. The method solves variousproblems that the gunning materials produced by the current methods and used for steel ladle linings have low bonding strength, etc.

Description

technical field [0001] The invention discloses a method for manufacturing a gunning material for a ladle; specifically, it refers to a method for manufacturing a gunning material containing magnesia olivine sand. Background technique [0002] At present, in steelmaking production, most of the repairs after tapping the ladle are done by replacing the refractory material or repairing the refractory material. To replace the refractory material, it is necessary to wait for the temperature of the ladle to cool down completely, then remove the refractory material of the damaged part, and then replace the refractory material. Fill in new materials; this will reduce the utilization rate of the enclosure and affect production; in order to ensure production, it is necessary to prepare multiple enclosure materials for backup; it not only wastes a lot of refractory materials, but also increases the trouble of replacement, and occupies a large number of sites The other is to adopt the me...

Claims

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Application Information

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IPC IPC(8): C04B35/66B22D41/02
Inventor 崔凤海王兴旺
Owner YINGKOU CHENXING REFRACTORY MATERIAL
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