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Green silicon carbide reaction mixture and synthetic technology and charging baffle plate finished by adopting same
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A technology of green silicon carbide and synthesis process, which is applied in the direction of silicon carbide and carbide, which can solve the problems of increased production cost and lower quality of silicon carbide, and achieve the effects of reducing operating time, increasing material density, and increasing thermal conductivity
Active Publication Date: 2015-07-01
石河子市丰拓硅材料科技有限公司
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If things go on like this, the quality of silicon carbide will decline, and the production cost will increase, especially in terms of power consumption per ton
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Embodiment 1
[0046] refer to figure 1 — Figure 4 , a kind of green silicon carbide reactive mixture, comprising the following materials by weight:
[0047] Add 0.2 parts by weight of quartz sand, 0.18 parts of petroleumcoke, 0.2 parts of silicon carbide return charge, and 0.5 parts of fine crystals to 1 part by weight of roasting material;
[0048] The SiO of the quartz sand 2 Content≥99.3%, Al 2 o 3 Content≤0.3%, Fe 2 o 3 Content ≤ 0.2%, CaO content ≤ 0.1%, Ignition content ≤ 0.2%;
[0049] The fixed carbon of the petroleumcoke is ≥ 90%, the ash content is ≤ 0.8%, the volatile content is ≤ 7%, and the sulfur content is ≤ 1%;
[0050] The calcined material is obtained after the front round green silicon carbide synthesis reaction, wherein the Sic content is 20%, SiO 2 Content 25%, Al 2 o 3 content 2%, MgO content 0.03%, CaO content 0.6%, Fe 2 o 3 Content 0.05%, F·C content 5%, NaCl content 0.1%;
[0051] The SiO of the silicon carbide return charge 2 Content ≥ 90%, F·C c...
Embodiment 2
[0057] Compared with Example 1, the difference of this example is: a kind of green silicon carbide reactive mixture, comprising the following materials by weight:
[0058] Add 0.3 parts by weight of quartz sand, 0.45 parts of petroleum coke, 0.3 parts of silicon carbide return charge, and 0.3 parts of fine crystals to 1 part by weight of the calcined material;
[0059] Wherein said calcined material is obtained after the synthetic reaction of front wheel green silicon carbide, wherein the Sic content is 22%, SiO 2 Content 28%, Al 2 o 3 content 3%, MgO content 0.02%, CaO content 0.5%, Fe 2 o 3 Content 0.08%, F·C content 2%, NaCl content 0.2%.
Embodiment 3
[0061] Compared with Example 1, the difference of this example is: a kind of green silicon carbide reactive mixture, comprising the following materials by weight:
[0062] Add 0.4 parts by weight of quartz sand, 0.22 parts of petroleum coke, 0.1 part of silicon carbide return charge, and 0.4 parts of fine crystals to 1 part by weight of the calcined material;
[0063] Wherein said calcined material is obtained after the synthetic reaction of front wheel green silicon carbide, wherein the Sic content is 24%, SiO 2 Content 30%, Al 2 o 3 content 4%, MgO content 0.01%, CaO content 0.3%, Fe 2 o 3 Content 0.14%, F·C content 4%, NaCl content 0.1%.
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Abstract
The invention relates to the technical field of smelting and chemical engineering. A green siliconcarbide reaction mixture is manufactured by blending of the following materials in parts by weight: adding 0.2-0.6 parts of quartz sand, 0.18-0.55 parts of refinerycoke, 0.1-0.3 parts of siliconcarbidefoundry return, and 0.3-0.7 parts of fine crystallization in 1 parts of roasting material and blending. A charging baffle plate of green siliconcarbide reaction mixture comprises a baffle plate body, wherein no separating plate is arranged in the baffle plate body. The synthesis technology of green silicon carbide of reaction mixture combines two divided spaces of a decomposition zone and a reaction zone to a side reaction zone; the charging baffle plate is placed in the side reaction zone during material filling process; the side reaction zone is filled with reaction mixture. The green silicon carbide reaction mixture can effectively improve the heat conduction and radiation speed in the furnace, lowers the unit consumption index, reduces the working hour, greatly improves the manufacturing cost of silicon carbide, and then improves the product quality; the charging baffle plate has simple structure and is economical and practical.
Description
technical field [0001] The invention relates to the technical field of smelting and chemical engineering, in particular to a green silicon carbide synthesis reaction mixture, a special charging partition and a green silicon carbide synthesis method using the mixture. Background technique [0002] At present, when green silicon carbide is produced, especially in the synthesis process, a synthesis furnace is used for production. The furnace of the synthesis furnace is a long tank body, and electrodes are provided at both ends of the tank body. The tank body between the electrodes is from the center to the The surrounding area is divided into furnace core area, reaction material area and roasting material area in turn. Fill conductive graphite in the furnace core area, fill reaction material in the reaction material area, and fill roasting material in the roasting material area. The reaction material area around the conductive graphite is conductive due to distance. The distanc...
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