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Graphite boat and method for producing tungsten carbide by direct carbonization of WO3+C+H2 using same

A technology of graphite boat and tungsten carbide, which is applied in the field of graphite boat and the direct carbonization of WO3+C+H2 to produce tungsten carbide, which can solve the problems of low production efficiency, complicated process, long process, etc., and achieve the purpose of improving service life, Uniform particle size and improved yield

Inactive Publication Date: 2008-04-23
梁光佳
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of graphite boat and use this boat to 3 +C+H 2 The method of direct carbonization to produce tungsten carbide to solve the current problems of complicated process, long process and low production efficiency

Method used

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  • Graphite boat and method for producing tungsten carbide by direct carbonization of WO3+C+H2 using same
  • Graphite boat and method for producing tungsten carbide by direct carbonization of WO3+C+H2 using same
  • Graphite boat and method for producing tungsten carbide by direct carbonization of WO3+C+H2 using same

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Embodiment Construction

[0010] figure 1 It reflects the structure of the graphite boat of the present invention. As can be seen from the figure, the graphite boat of the present invention has an upper hopper 1, a lower hopper 2 and a loam cake 3 for sealing the upper hopper, and the upper hopper 1 is seated on the lower hopper 2 to start capping and unloading The function of bin 2, the upper cover is used to cover the silo, as a specific embodiment, the upper and lower hopper and the cover form a cylinder and put it into the carbonization furnace. If the currently commonly used carbonization furnace with an inner diameter of 128mm is used, then this The outer diameter of the invention is 120mm, the inner diameter is 94mm, the outer length is 360mm, and the inner length is 330mm. The top of 6 is air channel 4.

[0011] The method for producing tungsten carbide with graphite boat of the present invention is to make WO 3 Mix the powder and C powder evenly, put them into the upper and lower hoppers (1...

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Abstract

The invention discloses a graphite boat and a method for producing tungsten carbide by directly carbonizing WO3+C+H2 with the graphite boat, where the graphite boat is combined of top and bottom cabins, and the method: putting WO3 and C mixed powders into the two cabins, and directly producing WC in a carbonization furnace ventilated by hydrogen gas. The invention can obtain WC product with uniform size, and stable carbon content; can shorten the whole reaction time of WO3 with C and H2, increasing WC output; can reduce H2 utilization, saving production cost; and can prolong service life of the carbonization furnace.

Description

technical field [0001] The invention relates to a graphite boat and the WO 3 +C+H 2 A method of producing tungsten carbide by direct carbonization. Background technique [0002] At present, the graphite boat used in the production of tungsten carbide is in the shape of an open semi-cylindrical, and the production process is to first make the WO 3 In the reduction furnace through H 2 Gas reduction into W powder, then mix W powder and C powder and carbonize into WC in a carbonization furnace. Because the traditional process is complicated and the process is long, the production efficiency is low. People have been trying to change this backward production state for a long time. In 1998, pages 26-28 of the book "Quality Control in the Production of Cemented Carbide" edited by Chen Chuxuan introduced a kind of graphite in existing graphite. WO in boat 3 +C+H 2 The method of direct carbonization to generate WC. This method shows that direct carbonization can obtain fine and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/34C01B32/949
Inventor 梁光佳梁元焕
Owner 梁光佳
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