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Preparation method of particle drainage agent

A technology of drainage agent and granule, which is applied in the field of preparation of granule drainage agent, can solve problems such as component segregation, achieve uniform particle size, avoid component segregation, and stabilize the pouring effect

Active Publication Date: 2018-06-01
HENAN TONGYU METALLURGY MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the technical problem to be solved by the present invention is to provide a preparation process of a granular drainage agent, to solve the problem of easy component segregation of the traditional drainage agent, improve the composition uniformity, automatic pouring rate and self-opening stability of the drainage agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of granular drainage agent, comprising the following steps:

[0029] Step S1: Select 78 parts by weight of chrome ore with a particle size of ≤100 mesh and 16 parts by weight of quartz sand, and mix them uniformly to obtain a fine powder;

[0030] Step S2: adding 5 parts by weight of water glass binder to the fine powder, and mixing evenly;

[0031]Step S3: extruding and granulating the material obtained in step S2 using an extrusion granulator to make granules with a particle diameter of 0.8 mm, and drying and solidifying the obtained granules at 450° C.;

[0032] Step S4: Add 1 part by weight of carbon black with a particle size of <1000 mesh to the dried and solidified particles, mix evenly, spray atomized water during the mixing process, so that the carbonaceous material is evenly attached to the surface of the particles, and finally bake Dry, that is, the granular drainage agent is prepared.

[0033] The chemical composition content of the ch...

Embodiment 2

[0036] A preparation method of granular drainage agent, comprising the following steps:

[0037] Step S1: select 25 parts by weight of fused magnesia with a particle size of ≤100 mesh, and 68 parts by weight of quartz sand, and mix them uniformly to obtain a fine powder;

[0038] Step S2: 6 parts by weight of ρ-Al 2 o 3 The binder is added to the fine powder and mixed evenly;

[0039] Step S3: extruding and granulating the material obtained in step S2 using an extrusion granulator to make granules with a particle diameter of 1 mm, and drying and solidifying the obtained granules at 420° C.;

[0040] Step S4: Add 1 part by weight of graphite with a particle size of <1000 mesh to the dried and solidified particles, mix evenly, spray atomized water during the mixing process, so that the carbonaceous material is evenly attached to the surface of the particles, and finally dry , that is, the granular drainage agent is prepared.

[0041] The chemical composition content of the m...

Embodiment 3

[0044] A preparation method of granular drainage agent, comprising the following steps:

[0045] Step S1: Select 86 parts by weight of quartz sand with a particle size of ≤100 mesh and 5 parts by weight of corundum, and mix them uniformly to obtain a fine powder;

[0046] Step S2: 8.5 parts by weight of ρ-Al 2 o 3 The binder is added to the fine powder and mixed evenly;

[0047] Step S3: extruding and granulating the material obtained in step S2 using an extrusion granulator to make granules with a particle diameter of 1 mm, and drying and solidifying the obtained granules at 465° C.;

[0048] Step S4: Add 0.5 parts by weight of graphite with a particle size of <1000 mesh to the dried and solidified particles, mix evenly, spray atomized water during the mixing process, so that the carbonaceous material is evenly attached to the surface of the particles, and finally dry , that is, the granular drainage agent is prepared.

[0049] The chemical composition content of the sili...

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Abstract

The invention provides a preparation method of a particle drainage agent, and relates to the technical field of metallurgical fire-refractory materials. The preparation method of the particle drainageagent comprises the following steps of selecting a composition of one or more than two of chrome ore, quartz sand, corundum, zircon sand and magnesium sand with granularity smaller than or equal to 100 meshes as a raw material, weighing the applicable weight of raw materials according to the formula of the drainage agent, and uniformly mixing, so as to obtain fine powder; adding a binder into thefine powder, and uniformly mixing; extruding, granulating into particles, and drying and curing the obtained particles, so as to obtain the particle drainage agent. The particle drainage sand prepared by the method has the advantages that the components are uniform and stable, the content deviation is controlled within + / -0.5%, and the segregation of components is avoided in the production, transportation and use process. The particle drainage agent has the advantages that the granularity is uniform and stable, and the controllability is larger; in the use process, the casting effect is stable, and the automatic casting rate is stabilized to 99.5% or above.

Description

technical field [0001] The invention relates to the technical field of metallurgical refractory materials, in particular to a preparation method of a particle drainage agent. Background technique [0002] With the development and wide application of continuous casting technology, the ladle has replaced the original ceramic stopper rod with sliding nozzle and drainage agent. With the continuous improvement of people's requirements for the quality of molten steel, automatic pouring of ladles has attracted much attention. If the pouring cannot be started automatically, the method of boiling the oxygen lance to assist the drainage will be used, which will cause a considerable amount of molten steel to be poured open, causing secondary oxidation, affecting the quality of molten steel, increasing the cost of pouring steel, and threatening equipment and operators at the same time safety. [0003] Among the many factors affecting the self-opening rate of the ladle, the composition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/14C04B35/12C04B35/622B22D41/44
CPCB22D41/44C04B35/12C04B35/14C04B35/622C04B35/66C04B2235/3206C04B2235/3217C04B2235/3272
Inventor 王勇源高金星陈守杰李秀锋胡杰曹子乐
Owner HENAN TONGYU METALLURGY MATERIALS GRP
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