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A kind of high silicon magnesia refractory brick and preparation method thereof
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A technology of refractory bricks and high-silicon magnesia is applied in the field of refractory materials, which can solve the problems of high cost and complicated process of high-strength magnesia refractory bricks, and achieve the effects of strong temperature resistance, simple process and high strength.
Inactive Publication Date: 2016-01-20
CHANGXING JIACHENG REFRACTORIES
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Problems solved by technology
[0005] In order to solve the problems of high cost and complex process of high-strength magnesia refractory bricks, we have proposed a high-silicon magnesia refractory brick and its preparation method. The strength and high temperature stability of magnesia refractory bricks can be improved by using the invention, and can also cut costs
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Embodiment 1
[0024] A high-silicon magnesia refractory brick is composed of the following raw materials in parts by weight: 92 parts of 98% magnesia, 5 parts of quartz crucible treatment material, and 3 parts of adhesive. The production steps are as follows:
[0025] (1) Crushing the waste quartz crucible into fragments of 1 to 50 mm;
[0026] (2) Use 20% by weight mixed acid to pickle the scrap, the weight ratio of scrap to mixed acid is 1:3, and pickle for 72 hours; the weight ratio of oxalic acid and hydrochloric acid in the mixed acid is 1:3.
[0027] (3) Take out the scraps after pickling, soak in water, wash until neutral, put the scraps in an outdoor ventilated and light place and dry them until the water content is about 10% by weight, and then dry the scraps through a dryer until they contain water The weight ratio is less than 5%, which is the quartz crucible treatment material;
[0028] (4) Grinding high-quality magnesia and quartz crucible treatment materials into a particle ...
Embodiment 2
[0034] A high-silicon magnesia refractory brick is composed of the following raw materials in parts by weight: 89 parts of 98% magnesia, 8 parts of quartz crucible treatment material, and 3 parts of adhesive.
[0035] The production steps are substantially the same as in Example 1. After completion, 20 samples were randomly sampled for high-temperature performance test, and the results are shown in Table 1.
Embodiment 3
[0037] A high-silicon magnesia refractory brick is composed of the following raw materials in parts by weight: 86 parts of 98% magnesia, 11 parts of quartz crucible treatment material, and 3 parts of adhesive.
[0038] The production steps are substantially the same as in Example 1. After completion, 20 samples were randomly sampled for high-temperature performance test, and the results are shown in Table 1.
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Abstract
The invention provides a high silicon and magnesium refractory brick. The refractory brick is composed of high-quality magnesia, a quartz crucible treatment material and an adhesive. The invention also provides a making method of the high silicon and magnesium refractory brick. The method comprises the following steps: 1, crushing waste quartz crucibles; 2, pickling; 3, immersing, washing, and drying; 4, crushing the high-quality magnesia and the quartz crucibles, sending the crushed high-quality magnesia and the crushed quartz crucibles to an ingredient stirring tank together with the adhesive, and stirring at normal temperature under normal pressure; 5, carrying out compaction molding; 6, roasting; and 7, molding, drying, sorting, examining, packaging, and warehousing. The refractory brick produced through the method has the advantages of large strength, strong temperature resistance, low cost and simple process.
Description
technical field [0001] The invention relates to the technical field of refractory materials, in particular to a high-silicon magnesia refractory brick and a preparation method thereof Background technique [0002] Refractory materials are generally divided into two types, namely unshaped refractory materials and shaped refractory materials. Shaped refractory materials generally refer to refractory bricks, whose shape has standard rules, and can also be temporarily processed when building and cutting according to needs. Refractory bricks, referred to as firebricks, are made of refractory clay or other refractory materials, light yellow or brownish, mainly used for building smelting furnaces, and can withstand high temperatures of 1,580°C-1,770°C, and have a certain shape and size. Material. Magnesia refractory bricks refer to refractory bricks that use magnesia as raw material, periclase as the main crystal phase, and MgO content of more than 80% to 85%. Magnesia refractor...
Claims
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Application Information
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