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A kind of rh brick with excellent mud retention and preparation method thereof

A kind of mud material and excellent technology, which is applied in the field of periclase-spinel bricks for RH furnaces, can solve the problems of easy drying of mud material and large deviation of first and last single weight, and achieve slow water volatilization speed, good moisturizing performance, The effect of improving brick forming quality and production efficiency

Active Publication Date: 2021-11-26
瑞泰马钢新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to optimize on the basis of the original periclase-spinel bricks for RH furnaces, and to prepare RH bricks with excellent mud moisture retention performance by adding special additives with moisture retention function, so as to solve the problem of mud retention in the production process of RH bricks. Easy to dry, large deviation of first and last single weight, etc.

Method used

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  • A kind of rh brick with excellent mud retention and preparation method thereof
  • A kind of rh brick with excellent mud retention and preparation method thereof
  • A kind of rh brick with excellent mud retention and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of RH brick with excellent moisture retention of mud material, mixed and milled according to 600kg, the composition is as follows: 97 fused magnesia particles 5-3mm are 15%, 3-1mm is 15%, 1-0mm is 15%, 97 fused magnesia Fine powder 240 mesh (61μm) is 30%, fused magnesia aluminum spinel particles 1-0mm is 14%, fused magnesia aluminum spinel fine powder 325 mesh (45μm) is 5%, magnesium aluminum gel binder 3%, commercially available antioxidant aluminum-silicon alloy powder 1%, humectant (citric acid and glucose mixed at 0.8:1) 2%, tap water 1.2%.

[0020] In this embodiment, after the humectant is introduced, the effective molding time of the mud is extended from 30 minutes to 50 minutes. It takes 40-50 minutes for each mud press to form, and the press forms a brick with a theoretical unit weight of 14.7kg, of which the unit weight of the first brick is 14.7kg, and the unit weight of the last brick is 14.65kg, with a small drop in the first and last unit weight.

...

Embodiment 2

[0025] A kind of RH brick with excellent moisture retention of mud material, mixed and milled according to 600kg, the composition is as follows: 97 fused magnesia particles 5-3mm are 20%, 3-1mm is 20%, 1-0mm is 25%, 97 fused magnesia Fine powder 240 mesh is 10%, fused magnesia aluminum spinel particles 1-0mm is 10%, fused magnesia aluminum spinel fine powder 325 mesh is 6%, magnesium aluminum gel binder 4%, commercially available anti Oxidant aluminum-silicon alloy powder 2%, humectant (citric acid and glucose mixed at 0.8:1) 3%, tap water 1.3%.

[0026] In this embodiment, after the humectant is introduced, the effective molding time of the mud is extended from 30 minutes to 50 minutes. It takes 40-50 minutes for each mud press to form a brick, and the press forms a brick with a theoretical unit weight of 14.7kg, of which the unit weight of the first brick is 14.7kg, and the unit weight of the last brick is 14.68kg, with a small drop in the first and last unit weight.

[002...

Embodiment 3

[0031] A kind of RH brick with excellent moisture retention of mud material, mixed and milled according to 600kg, the composition is as follows: 97 fused magnesia particles 5-3mm are 20%, 3-1mm is 15%, 1-0mm is 20%, 97 fused magnesia Fine powder 240 mesh is 10%, fused magnesia aluminum spinel particles 1-0mm is 15%, fused magnesia aluminum spinel fine powder 325 mesh is 10%, magnesium aluminum gel binder 4%, commercially available anti Oxidant aluminum-silicon alloy powder 3%, humectant (citric acid and glucose mixed at 0.8:1) 3%, tap water 1.3%.

[0032] In this embodiment, after the humectant is introduced, the effective molding time of the mud is extended from 30 minutes to 50 minutes. It takes 40-50 minutes for each mud press to form, and the press forms a brick with a theoretical unit weight of 14.7kg, of which the unit weight of the first brick is 14.7kg, and the unit weight of the last brick is 14.66kg, with a small drop in the first and last unit weight.

[0033] RH b...

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Abstract

The invention relates to the technical field of refractory materials for RH furnaces, relates to a kind of RH brick with good moisture retention of mud material and its preparation method, in particular to a kind of brick which uses fused magnesia, magnesia spinel, etc. as main raw materials, and has moisture retention function by adding additive, and the prepared mud has excellent moisture-retaining properties of periclase-spinel brick for RH furnaces. The moisturizer is carboxylic acid organic matter and a polysaccharide substance, and the ratio of the two is 0.8:1-1.2 : 1, the carboxylic acid organic matter is selected from sodium citrate or citric acid, and the polysaccharide material can be glucose or sodium gluconate; after adding a humectant, the moisture retention performance of the RH brick mud material is good, and the effective molding time of the mud material increases, Specifically, the RH brick produced by the present invention can obviously slow down the volatilization rate of moisture in the mud material when the outdoor temperature is above 35, the effective molding time is increased to 60min, the mixing amount of the mud material is increased to 600kg-800 / mill, and the brick molding is improved. quality and production efficiency.

Description

technical field [0001] The invention relates to the technical field of refractory materials for RH furnaces, and relates to a RH brick with excellent mud retention and a preparation method thereof, in particular to a method of using fused magnesia, magnesia spinel, etc. as main raw materials, and having a moisturizing function by adding additives, and the prepared mud has excellent moisture-retaining properties of periclase-spinel bricks for RH furnaces. Background technique [0002] Due to the harsh smelting conditions and harsh environment of the RH refining furnace, the requirements for refractory materials are more stringent. The refractory materials used in RH furnaces were originally made of magnesia-chrome bricks. Chromium pollution is gradually replaced by periclase-spinel bricks. [0003] At present, some of the chromium-free RH furnace bricks used at home and abroad are combined with periclase-spinel bricks with liquid resin, and the other part is combined with wa...

Claims

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Application Information

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IPC IPC(8): C04B35/043
CPCC04B35/043C04B2235/3218C04B2235/3222C04B2235/3418C04B2235/402C04B2235/428C04B2235/5427C04B2235/5436C04B2235/602C04B2235/606C04B2235/77C04B2235/96
Inventor 陈海山卢咏明张小红崔任渠郁书中彭学峰汪朝晖刘翔鲲
Owner 瑞泰马钢新材料科技有限公司
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