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A kind of refractory material for rotary kiln and preparation method thereof

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

Active Publication Date: 2017-01-04
云南天朗能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A kind of refractory material for rotary kiln and preparation 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-magnesia-aluminum spinel ceramic fine powder, 2 parts by weight 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, and Al 2 O 3 The content is 6~10wt%, the phase composition is periclase and magnesia alumina spinel, and the particle size is 0.2~1mm.

[0020] The preparation method of the refractory material for the rotary kiln includes the following steps:

[0021] Step (1), alumina fiber and boron carbide powder are uniformly dispersed in liquid tar, and then β-SiC, needle coke, porous periclase-magnesia alumina spinel ceramic powder, silica powder and floating beads are added, and stirred ...

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-magnesia-aluminum spinel ceramic fine powder, and 5 parts by weight Parts, 5 parts of floating beads, 5 parts of alumina fiber, 10 parts of boron carbide powder, 5 parts of 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, and Al 2 O 3 The content is 6~10wt%, the phase composition is periclase and magnesia alumina spinel, and the particle size is 0.2~1mm.

[0026] The preparation method of the refractory material for the rotary kiln includes the following steps:

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

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-magnesia alumina spinel ceramic fine powder, 3 parts by weight 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, and Al 2 O 3 The content is 6~10wt%, the phase composition is periclase and magnesia alumina spinel, and the particle size is 0.2~1mm.

[0032] The preparation method of the refractory material for the rotary kiln includes the following steps:

[0033] Step (1), alumina fiber and boron carbide powder are uniformly dispersed in liquid tar, and then β-SiC, needle coke, porous periclase-magnesia alumina spinel ceramic powder, silica powder and floating beads are added, and stirred ...

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Abstract

The invention relates to a refractory material for a rotary kiln and a preparation method thereof, belonging to the technical field of refractory materials. The refractory material includes the following components in parts by weight: 20-25 parts of β-SiC, 8-15 parts of needle coke, 60-70 parts of porous periclase-magnesium-aluminum spinel ceramic fine powder, and silicon micropowder 2‑5 parts, 2‑5 parts of floating beads, 3‑5 parts of alumina fiber, 7‑10 parts of boron carbide powder, 2‑5 parts of binder. The preparation method of the refractory material for rotary kiln of the present invention is simple and reliable, and the refractory material obtained has the advantages of high compressive strength, good wear resistance, good thermal shock performance and strong medium erosion resistance, convenient construction, and greatly prolongs the durability of the rotary kiln. The service life of the material ensures the normal production of the enterprise, and at the same time minimizes the maintenance work time and reduces the maintenance cost.

Description

Technical field [0001] The invention belongs to the technical field of refractory materials, and specifically 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 building materials equipment category. Rotary kilns can be divided into cement kilns, metallurgical chemical kilns and lime kilns according to different materials. Cement kilns are mainly used for calcination of cement clinker, divided into two categories: dry production cement kilns and wet production cement kilns. Metallurgical chemical kilns are mainly used for the magnetic roasting of lean iron ore in metallurgical industry; oxidation roasting of chromium and nickel iron ore; roasting high alumina bauxite ore in refractory plants and roasting clinker and aluminum hydroxide in aluminum plants; roasting chrome ore in chemical plants And chrome ore powder and other...

Claims

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Application Information

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Patent Type & Authority Patents(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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