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A kind of preparation method of desulfurization nozzle and its forming device

A technology of desulfurization nozzle and mold release agent, which is applied to ceramic forming cores, ceramic forming machines, ceramic forming mandrels, etc., can solve the problems of difficult forming, many curved surfaces, complex shapes, etc., and achieves good quality consistency, low cost, The device has a simple effect

Active Publication Date: 2016-09-07
咸阳陶瓷研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has the characteristics of complex shape, many curved surfaces and difficult molding.

Method used

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  • A kind of preparation method of desulfurization nozzle and its forming device

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Effect test

specific Embodiment 1

[0067] A method for preparing a low-cost desulfurization nozzle, comprising the following steps:

[0068] (1), first smear release agent to the inner surface of outer mold and the outer surface of inner mould, then outer mold and outer mold are affixed by clamping pin 4 to form forming mould,

[0069] (2), 50 parts of silicon carbide sand, 25 parts of modified silicon powder, 3 parts of silicon nitride powder, 1 part of aluminum oxide, 0.5 part of vanadium oxide, 0.1 part of copper powder, 0.1 part of sodium tannate, 0.1 part of humic acid Sodium is added to the ball mill, mixed according to the ratio of material: ball = 1:1.5 and ball milled for 3 hours, then passed through a 5-mesh sieve, and the ground balls are sieved to obtain the mixed powder;

[0070] (3) Install the outer mold first, then put the inner mold into the outer mold, fill the gap between the outer mold and the inner mold with the powder obtained in step (2), and install the blocking material circular plate a...

specific Embodiment 2

[0111] A method for preparing a low-cost desulfurization nozzle, comprising the following steps:

[0112] (1), first smear release agent to the inner surface of outer mold and the outer surface of inner mould, then outer mold and outer mold are affixed by clamping pin 4 to form forming mould,

[0113] (2), 75 parts of silicon carbide sand, 40 parts of modified silicon powder, 8 parts of silicon nitride powder, 5 parts of alumina, 2 parts of vanadium oxide, 1 part of copper powder, 0.3 parts of sodium tannate, 0.3 parts of humic acid Sodium is added to the ball mill, mixed according to the ratio of material: ball = 1:2, ball milled for 3 hours, passed through a 5-mesh sieve, and sieved to remove the grinding balls to obtain the mixed powder;

[0114] (3) Install the outer mold first, then put the inner mold into the outer mold, fill the gap between the outer mold and the inner mold with the powder obtained in step (2), and install the blocking material circular plate and cover ...

specific Embodiment 3

[0153] A method for preparing a low-cost desulfurization nozzle, comprising the following steps:

[0154] (1), first smear release agent to the inner surface of outer mold and the outer surface of inner mould, then outer mold and outer mold are affixed by clamping pin 4 to form forming mould,

[0155] (2), 60 parts of silicon carbide sand, 30 parts of modified silicon powder, 5 parts of silicon nitride powder, 3 parts of aluminum oxide, 1 part of vanadium oxide, 0.5 part of copper powder, 0.2 part of sodium tannate, 0.2 part of humic acid Sodium is added to the ball mill, mixed according to the ratio of material: ball = 1:1.8 and ball milled for 3 hours, then passed through a 5-mesh sieve, and the ground balls are sieved to obtain the mixed powder;

[0156] (3) Install the outer mold first, then put the inner mold into the outer mold, fill the gap between the outer mold and the inner mold with the powder obtained in step (2), and install the blocking material circular plate an...

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Abstract

The invention relates to a preparation method and a shaping device of a sulfur removal nozzle. The preparation method of the low cost sulfur removal nozzle includes following steps: 1, firstly, smearing a release agent on the inner surface of an outer mold and the outer surface of an inner mold; 2, obtaining mixed powder by mixing materials, performing ball milling on the materials, and sieving the materials; 3, filling an interval between the outer mold and the inner mold with the powder, and using a liquid pump to inject high pressure liquid into the hollow inner mold; 4, releasing pressure; 5, drying the mixed powder; 6, obtaining the sulfur removal nozzle after sintering the powder. The shaping device of the sulfur removal nozzle comprises a shaping mold and the hydraulic pump, wherein the shaping mold and the hydraulic pump are connected through a high pressure hose, the shaping mold comprises the metal outer mold, the rubber inner mold, a first cover plate, a second cover plate and a pressurizing connector, the metal outer mold is composed of a first outer mold and a second outre mold, the rubber inner mold is arranged in an inner cavity of the metal outer mold, through holes are formed in the side wall and the bottom of the metal outer mold, a second blocking round plate is further arranged on a contact position of the second cover plate and the metal outer mold, a through hole is formed in the middle of the second cover plate, and the pressurizing connector is arranged on the outer side of the through hole in the middle of the second cover plate.

Description

technical field [0001] The invention belongs to the field of inorganic material preparation, and in particular relates to a method for preparing a desulfurization nozzle and a molding device thereof. Background technique [0002] The desulfurization nozzle is a key component in the desulfurization absorption tower of a thermal power plant. It needs to work in a high temperature, high humidity, and high abrasive environment, and it needs to have a long service life to reduce the cost of the desulfurization process. Generally, wear-resistant and corrosion-resistant fine ceramic materials such as silicon nitride combined with silicon carbide, reaction sintered silicon carbide, etc. can be used to meet the above requirements. But it itself has the characteristics of complex shape, many curved surfaces, and difficult molding. How to mold advanced ceramic raw materials into qualified ceramic green bodies at low cost according to the design requirements is a complicated process. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B7/00B28B7/28B28B1/24C04B35/565C04B35/622
CPCB28B1/24B28B7/00B28B7/28B28B7/38C04B35/565C04B35/62281
Inventor 梁振海侯撑选李缨孙文瑞
Owner 咸阳陶瓷研究设计院有限公司
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