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Refractory material for rotary kiln and preparing method thereof

A refractory material and rotary kiln technology, applied in the field of refractory materials, can solve the problems of cracking, spalling and abrasion damage, achieve the effect of good wear resistance, strong resistance to medium erosion, and ensure normal production

Active Publication Date: 2014-11-12
云南天朗能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in the rotary kiln used for large-scale dry-process cement kiln and calcination of bauxite and magnesia clinker, the castable at the front kiln mouth must bear the huge thermomechanical stress and thermal shock damage caused by the high temperature kiln body, as well as the large output High-temperature hard clinker wear and other destructive effects, so it is prone to cracking, peeling and abrasion damage

Method used

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  • Refractory material for rotary kiln and preparing method thereof

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Effect test

Embodiment 1

[0018] A refractory material for a rotary kiln, comprising the following components in parts by weight: 20 parts of β-SiC, 8 parts of needle coke, 60 parts of porous periclase-magnesium aluminum spinel ceramic fine powder, 2 parts of silicon micropowder 2 parts, 2 parts of floating beads, 3 parts of alumina fiber, 7 parts of boron carbide powder, 2 parts of liquid tar;

[0019] Wherein, the apparent porosity of the porous periclase-magnesia-aluminum spinel ceramic fine powder is 25-30%, the average pore diameter is 1-25 μm, the Al 2 o 3 The content is 6~10wt%, the phase composition is periclase and magnesium aluminum spinel, and the particle size is 0.2~1mm.

[0020] The preparation method of the refractory material for the above-mentioned rotary kiln comprises the following steps:

[0021] Step (1), alumina fiber and boron carbide powder are uniformly dispersed in liquid tar, then add β-SiC, needle coke, porous periclase-magnesium aluminum spinel ceramic fine powder, silic...

Embodiment 2

[0024] A refractory material for a rotary kiln, comprising the following components in parts by weight: 25 parts of β-SiC, 15 parts of needle coke, 70 parts of porous periclase-magnesium aluminum spinel ceramic fine powder, 5 parts of silicon micropowder 5 parts, 5 parts of floating beads, 5 parts of alumina fiber, 10 parts of boron carbide powder, 5 parts of thermoplastic phenolic resin liquid;

[0025] Wherein, the apparent porosity of the porous periclase-magnesia-aluminum spinel ceramic fine powder is 25-30%, the average pore diameter is 1-25 μm, the Al 2 o 3 The content is 6~10wt%, the phase composition is periclase and magnesium aluminum spinel, and the particle size is 0.2~1mm.

[0026] The preparation method of the refractory material for the above-mentioned rotary kiln comprises the following steps:

[0027] Step (1), alumina fiber and boron carbide powder are uniformly dispersed in thermoplastic phenolic resin liquid, and then β-SiC, needle coke, porous periclase-...

Embodiment 3

[0030] A refractory material for a rotary kiln, comprising the following components in parts by weight: 23 parts of β-SiC, 12 parts of needle coke, 66 parts of porous periclase-magnesium aluminum spinel ceramic fine powder, 3 parts of silicon micropowder 4 parts, 4 parts of floating beads, 4 parts of alumina fiber, 9 parts of boron carbide powder, 3 parts of liquid tar;

[0031] Wherein, the apparent porosity of the porous periclase-magnesia-aluminum spinel ceramic fine powder is 25-30%, the average pore diameter is 1-25 μm, the Al 2 o 3 The content is 6~10wt%, the phase composition is periclase and magnesium aluminum spinel, and the particle size is 0.2~1mm.

[0032] The preparation method of the refractory material for the above-mentioned rotary kiln comprises the following steps:

[0033] Step (1), alumina fiber and boron carbide powder are uniformly dispersed in liquid tar, then add β-SiC, needle coke, porous periclase-magnesium aluminum spinel ceramic fine powder, sili...

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Abstract

The invention relates to a refractory material for a rotary kiln and a preparing method thereof and belongs to the technical field of refractory materials. The refractory material comprises, by weight, 20-25 parts of beta-SiC, 8-15 parts of needle coke, 60-70 parts of porous periclase-magnesium aluminate spinel ceramic fine powder, 2-5 parts of silica powder, 2-5 parts of floating bead, 3-5 parts of alumina fibre, 7-10 parts of boron carbide powder and 2-5 parts of binding agent. The method for preparing the refractory material for the rotary kiln is simple and reliable, the prepared refractory material has the advantage of being high in compression strength, wear resistance, thermal shock performance and medium erosion resistance, construction is convenient, the service life of the refractory material for the rotary kiln is prolonged greatly, normal production of an enterprise is guaranteed, maintenance time is shortened to the maximum degree, and maintenance cost is reduced to the maximum degree.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a refractory material for a rotary kiln and a preparation method thereof. Background technique [0002] Rotary kiln refers to rotary calcining kiln, commonly known as rotary kiln, which belongs to the category of building materials equipment. Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials. Cement kilns are mainly used for calcining cement clinker, which can be divided into two categories: dry production cement kiln and wet production cement kiln. Metallurgical and chemical kilns are mainly used for magnetization roasting of lean iron ore in iron and steel plants in the metallurgical industry; oxidative roasting of chromium and nickel-iron ore; roasting of high-alumina bauxite in refractory plants and clinker and aluminum hydroxide in aluminum plants; roasting of chromium ore in chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陈昆宁周庆华杨汝林刘成龚贵君
Owner 云南天朗能源科技有限公司
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