Wear and corrosion resistant castable prepared from bauxite-based homogenous material and preparation method thereof
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A homogeneous material and castable technology, applied in the field of refractory castables, can solve the problems of poor wear resistance and alkali corrosion resistance, poor wear resistance and alkali corrosion resistance, low medium temperature strength, etc., and achieve high hot strength, low open pores, The effect of high density
Active Publication Date: 2010-11-17
YANGQUAN JINYU TONGDA HIGH TEMPERATURE MATERIALS +1
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[0006] The object of the present invention is a wear-resistant and anti-corrosion castable prepared by using an alumina-based homogeneous material and a method thereof. The chemical composition of the alumina-based homogeneous material is uniform, the performance is stable, the main crystal phase is mullite, and the linear change is small. Microscopically, the crystals are interpenetrated to form excellent high-temperature strength, and at the same time have certain flexibility and other characteristics to improve the current high-alumina bauxite castables. Corundum and corundum castables have low medium temperature strength, poor wear resistance, alkali resistance, chlorine and sulfur corrosion performance
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Embodiment 1
[0022] The wear-resistant and anti-corrosion castable prepared by alumina-based homogeneous material is prepared according to the following ratio:
[0023] 70 Alumina-based homogeneous material with a particle size of 3-5mm 16%
[0024] (Al 2 o 3 content is 70%)
[0025] 70 Alumina-based homogeneous material with a particle size of 1-3mm 38%
[0026] 70 Alumina-based homogeneous material with a particle size of 0-1 mm 27%
[0027] Aluminum oxide powder 8%
[0028] Microsilica 6%
[0029] Pure calcium aluminate cement 5%
[0030] Admixture 0.3%
Embodiment 2
[0032] The wear-resistant and anti-corrosion castable prepared by alumina-based homogeneous material is prepared according to the following ratio:
[0033] 80 Alumina-based homogeneous material with a particle size of 3-5 mm 20%
[0034] (Al 2 o 3 content is 80%)
[0035] 80 Alumina-based homogeneous material with a particle size of 1-3 mm 30%
[0036] 80 Alumina-based homogeneous material with a particle size of 0-1mm 18%
[0037] Aluminum oxide powder 21%
[0038] Microsilica 5%
[0039] Pure calcium aluminate cement 6%
[0040] Admixture 0.235%
Embodiment 3
[0042] The wear-resistant and anti-corrosion castable prepared by alumina-based homogeneous material is prepared according to the following ratio:
[0043] 88 bauxite-based homogeneous material with a particle size of 5-8mm 12%
[0044] (Al 2 o 3 content is 88%)
[0045] 88 bauxite-based homogeneous material with a particle size of 3-5mm 12%
[0046] 88 bauxite-based homogeneous material with a particle size of 1-3mm 16%
[0047] 88 Alumina-based homogeneous material with a particle size of 0-1 mm 36%
[0048] Aluminum oxide powder 15%
[0049] Microsilica 4%
[0050] Pure calcium aluminate cement 5%
[0051] Admixture 0.43%
[0052] The properties of the wear-resistant and anti-erosion castables prepared by the present invention using alumina-based homogeneous materials are shown in the following table:
[0053]
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Abstract
The invention discloses wear corrosion resistant castable prepared from a bauxite-based homogenous material and a preparation method thereof, which belong to the technical field of castable refractory. In the invention, by using the characteristics of the bauxite-based homogenous material, such as homogeneous chemical components and structure, stable performance, mulite main crystal phase, small linear change, high high-temperature strength and certain flexibility due to mutual insertion of micro crystals and the like, the shortcomings of low middle-temperature strength and poor wear resistance and alkali corrosion resistance of the conventional high-aluminum bauxite castable are overcome, and the problems of low middle-temperature strength, poor wear resistance and poor alkali, chloride and sulphur corrosion resistance of the conventional high-aluminum and corundum castable are effectively solved. The wear and corrosion resistant castable with high middle-temperature performance is prepared. The wear corrosion resistant castable and the preparation method thereof have the advantages of small fluctuation of water adding amount in construction, stable usability, reduction rate of partial corrosion, prolonged service life and wide application to a kiln hood, a grate cooler, a tertiary air duct and a decomposing furnace of a dry process cement kiln and relative parts of other ceramic and petrified thermo-technical kilns and the like.
Description
technical field [0001] The invention belongs to the technical field of refractory castables, and in particular provides a wear-resistant and corrosion-resistant castable prepared by using an alumina-based homogeneous material and a method thereof to prepare a wear-resistant and corrosion-resistant refractory castable for a dry-process cement kiln. Background technique [0002] From the late 1990s to the present, China's new dry process cement production has developed rapidly, especially large-scale new dry process cement kilns, such as new dry process cement production technology and equipment with a daily output of 5,000 tons and a daily output of 10,000 tons have reached the international advanced level. my country has become the world's cement manufacturing center. At present, there are more than 400 large-scale dry-process cement kiln production lines with a daily output of more than 2,500 tons in China. [0003] The improvement of the production technology level has brou...
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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 王林俊安建成田亮王艳玲李平冯运生
Owner YANGQUAN JINYU TONGDA HIGH TEMPERATURE MATERIALS
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