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Lining plate material for raw material blender used in synthetic production of silicon carbide

A technology of raw materials and mixers, applied in the field of mixer lining materials, can solve problems such as equipment replacement costs, enterprise losses, erosion, etc., and achieve the effects of extending maintenance cycles, improving product quality, and saving maintenance costs

Active Publication Date: 2014-05-07
石河子市丰拓硅材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In actual use, due to the abrasion of quartz sand, petroleum coke, industrial salt raw materials and liner, stirring blade or propulsion vane, industrial salt will also erode the liner, stirring blade or propulsion vane, after a period of use After a period of time, the lining board, stirring blade or propulsion blade will be damaged due to grinding, and must be replaced at this time. In addition to bringing equipment maintenance and replacement costs, it may also cause production stoppage and cause losses to the enterprise. Impurities such as shaved iron elements will be mixed into the material to pollute the material, which will seriously affect the quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Take 70 parts by weight of black silicon carbide powder with particle size > 75 μm-4mm, 30 parts by weight of black silicon carbide powder ≦ 75 μm, 8 parts of cement above 625, and SiO with particle size below 5 μm 2 2 parts of powder, 0.1-0.2 parts of melamine, 0.1-0.3 parts of sodium hexametaphosphate, 0.2 parts of polypropylene fiber with a length of 3 mm and a diameter of less than 50 μm. Add 20-30 parts by weight of water and stir evenly, press and form under 25Mpa pressure, after continuous firing at 300°C for 10 hours, 800°C for 25 hours, and 1550°C for 40 hours, install it in the raw material mixing room when using it. The corresponding parts of the feeder can be used.

Embodiment 2

[0012] Example 2: Take 65 parts by weight of black silicon carbide powder with a particle size > 75 μm-1 mm, 30 parts by weight of black silicon carbide powder with a particle size of ≦ 75 μm, 5 parts of cement above 625, and SiO with a particle size below 1 μm 2 3 parts of powder, 0.1-0.2 part of melamine, 0.1-0.3 part of sodium hexametaphosphate, 0.3 part of polypropylene fiber with a length of 5 mm and a diameter of 25 μm. Add 30 parts by weight of water and stir evenly, press and shape under 30Mpa pressure, and then continuously fire at 350°C for 8 hours, 850°C for 30 hours, and 1550°C for 35 hours. corresponding parts.

Embodiment 3

[0013] Example 3: Take 75 parts by weight of black silicon carbide powder with a particle size > 75 μm-2 mm, 25 parts by weight of black silicon carbide powder with a particle size of ≦ 75 μm, 7 parts of cement above 625, and SiO with a particle size of 10 μm or less 2 2.5 parts of powder, 0.15 parts of melamine, 0.15 parts of sodium hexametaphosphate, 0.3 parts of polypropylene fibers with a length of 4 mm and a diameter of less than 20 μm. After mixing the above-mentioned raw materials in proportion, add 20- The proportion of 30 parts by weight of water is stirred evenly, pressed and formed under a pressure above 25Mpa, and continuously fired at a constant temperature of 250°C for 9 hours, 750°C for 28 hours, and 1600°C for 40 hours. When used, it is installed in the raw material mixer. corresponding parts.

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Abstract

The invention discloses a lining plate material for a blender, in particular to a special lining plate material for a raw material blender used in the synthetic production of silicon carbide. The lining plate material is prepared by the steps of: adding water to 80-105 parts of black silicon carbide powder, 5-10 parts of cement, 2-3 parts of silicon micropowder, 0.1-0.2 part of tripolycyanamide, 0.1-0.3 part of sodium hexametaphosphate and 0.1-0.3 part of explosion-proof fiber and uniformly stirring; and pressing and moulding under the pressure of over 25Mpa and firing at the constant temperature of 250-350 DEG C for 8-10 hours, at the constant temperature of 750-850 DEG C for 25-30 hours and at the constant temperature of 1400-1600 DEG C for 35-40 hours. When used, the lining plate material is arranged at a corresponding part of the raw material blender. Compared with the prior art, the lining plate material has the advantages of high strength and abrasion resistance; and according to the measurement and calculation, in the actual use, the service life is 3-5 times that of the high-manganese steel or high-chromium steel lining plate, so that the repair cycle of the blender is greatly prolonged, the repair cost is effectively saved, the the generation of substances which pollute the materials due to the abrasion are avoided, and the quality of the product can be greatly improved.

Description

technical field [0001] The invention relates to a liner material for a mixer, in particular to a liner material specially used for a raw material mixer used in the synthetic production of silicon carbide. Background technique [0002] In the industrial synthetic production of green silicon carbide, the raw materials used, such as quartz sand, petroleum coke, industrial salt, wood chips or rice bran, etc., need to be mixed evenly in the mixer cabin before they can be loaded into the resistance furnace. [0003] The current mixer includes a machine chamber, and the inner wall of the machine chamber is provided with a lining plate to prevent wear and tear. If necessary, it is also equipped with a stirring blade or a propulsion blade. The lining plate, stirring blade or propulsion blade are usually made of high manganese steel. material or high chrome steel material. [0004] In actual use, due to the abrasion of quartz sand, petroleum coke, industrial salt raw materials and li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/565
Inventor 焦松强赵建立由远洪孙福龙白周义牛景林
Owner 石河子市丰拓硅材料科技有限公司
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