High-temperature resistant anti-corrosion clay special for acid pressure oxidative leaching high-pressure autoclave and preparation method thereof
A technology of oxygen pressure acid leaching and anti-corrosion cement, which is applied in the field of high-temperature anti-corrosion cement for oxygen pressure acid leaching autoclave and its preparation
Inactive Publication Date: 2011-05-18
昆明永瑞防腐有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a special high-temperature anti-corrosion cement for oxygen pressure acid leaching autoclave and its preparation method in view of the problems existing in the special high-pressure leaching kettle cement for direct pressure acid leaching of zinc sulfide concentrates.
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[0014] The preparation method of the high-temperature anti-corrosion mortar special for oxygen pressure acid leaching autoclave is characterized in that the specific process is as follows:
[0015] (1) Prepare materials according to Table 1, and the raw materials are all qualified products purchased on the market,
[0016] (2) Put the vinyl epoxy synthetic resin into the reaction kettle and heat it to 120°C,
[0017] (3) Vacuum stirring and kneading, synthetic resin and powdery or flaky fillers are mixed in a two-way stirring kneader under vacuum, the vacuum degree is -0.03MPa, fully stirred, the stirring time is 30-40min, and the cement after kneading The ingredients are mixed evenly until there is no dry powder, lumps, and no air bubbles. It is a high-temperature anti-corrosion mastic for oxygen pressure acid leaching autoclave.
[0018] Table 1
[0019]
[0020] (4) inspection
[0021] Quality Supervision and Inspection Center for Non-metallic Materials and Equipment...
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The invention discloses a high-temperature resistant anti-corrosion clay special for an acid pressure oxidative leaching high-pressure autoclave, which is characterized by being prepared from the following raw materials in percentage by weight: 20-40 percent of vinyl epoxy synthetic resin and 60-80 percent of padding, wherein the padding contains the following raw materials in percentage by weight: silica fume, glass flake, titanium dioxide powder, graphite powder, aluminum oxide and barium sulfate. A preparation method of the high-temperature resistant anti-corrosion clay special for the acid pressure oxidative leaching high-pressure autoclave comprises the following concrete process: adding the vinyl epoxy synthetic resin and the padding into a reaction kettle, heating, and stirring andrubbing in vacuum sufficiently until no dry powder or bubbles exist, and finally obtaining the high-temperature resistant anti-corrosion clay special for the acid pressure oxidative leaching high-pressure autoclave. The clay prepared by the invention can meet the requirements of high temperature resistance, anticorrosion, abrasion resistance, low permeability and extremely high heat stability when carrying out direct acid pressure oxidative leaching on zinc sulfide concentrate in the high-pressure autoclave and is simple in process and convenient to manufacture.
Description
technical field [0001] The invention relates to a preparation method of an anti-corrosion material, in particular to a high-temperature anti-corrosion clay special for an oxygen pressure acid leaching autoclave and a preparation method thereof. Background technique [0002] The direct oxygen pressure acid leaching of zinc sulfide concentrate was realized in industrial application in the 1980s. The key core equipment of the process is the high-pressure leaching kettle, which is a carbon steel pressure-bearing shell, and the inside is made of clay lining acid-resistant and heat-resistant bricks to form an anti-corrosion structure. The cement used needs to be temperature-resistant, corrosion-resistant, wear-resistant, and has low permeability and high thermal stability. Due to the very harsh working conditions, it was found during the research and development test that the cement traditionally used at home and abroad is difficult to meet the requirements, especially the gas ph...
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Login to View More IPC IPC(8): C04B26/14C04B14/04
CPCC04B26/14
Inventor 郭涛郭永锴陈光平
Owner 昆明永瑞防腐有限公司