Preparation of modified tailings powder and method for using the same as polymer filling material

A technology of tailings powder and modification, applied in the direction of dyeing organosilicon compound treatment, dyeing physical treatment, etc., to solve the problem of environmental pollution, easy to obtain, and realize the effect of added value

Inactive Publication Date: 2008-08-06
CENT SOUTH UNIV
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Problems solved by technology

At present, a single inorganic mineral filler is difficult to meet many comprehensive requirements, and the complexity of filler composition and structure is another important development trend of rubber and plastic fillers.

Method used

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  • Preparation of modified tailings powder and method for using the same as polymer filling material
  • Preparation of modified tailings powder and method for using the same as polymer filling material
  • Preparation of modified tailings powder and method for using the same as polymer filling material

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Embodiment 1

[0019] Example 1: Put 2 kg of tailings in a wet stirring mill, the ball milling medium adopts alumina balls, single-stage ball milling, the diameter is 4mm, the mass ratio of balls to material is 4:1, the ratio of material to water is 1:2, and the filling rate is 40%, the mill speed is 120r / min, and the grinding time is 2.5 hours. The slurry after grinding is press-filtered, dried and pulverized to obtain d 90 Ultrafine powder in the range of 15-20μm. Then put the powder in a self-made heatable high-speed stirring modifier, heat it up to 100°C, stir at a high speed of 800r / min for 30 minutes, and use the prepared mixed modifier, wherein, Absolute ethanol: silane modifier: titanate modifier = 2:1:1, the addition amount of silane modifier and titanate modifier is 3‰ of powder weight respectively, in the form of injection or spray Slowly inject into the modified cylinder, the injection time is 20min. After the injection is completed, increase the speed of the modifier to 1200r...

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Abstract

A preparation of modified tailing powder and a process which uses powder as polymer filling are disclosed. The preparation process of powder comprises placing tailing on an agitation grinder, and obtaining ultra-fine powder after press-filtering, drying and disintegrating slurry which is grinded, the adding powder into a high-speed agitating modifying machine to obtain function powder material whose volume weight is about 2.50g / ml, and particle size is narrowly distributed. The process of polymer filling used by modified tailing powder comprises adding modified tailing powder into the mixture which is mixed with PVC and stabilizator, and stirring and granulating to obtain matrix polymer. The process technology of preparing modified tailing powder is simple, raw material is solid residue, which is easy to gain, and the production conditions are loose. The powder is used as filling of polyvinyl chloride product, which is beneficial for reducing production cost, and is beneficial for solving the problem of environment pollution which is caused by solid residue.

Description

technical field [0001] The invention relates to a tailing filler for polymers and a preparation method, belonging to the field of inorganic non-metallic materials. Background technique [0002] The bauxite in my country is mainly composed of diaspore, which has the characteristics of high aluminum, high silicon and low iron. The aluminum-silicon ratio of the ore (Al in the ore 2 o 3 with SiO 2 The mass ratio (abbreviated as A / S) is relatively low, the A / S is more than 4-6, accounting for about 60% of the total storage, the A / S is 2-4, accounting for 10%, and the A / S is greater than 10 There are few ores, and the mining life is not long according to the traditional processing technology. The current reverse flotation beneficiation separation method has extended the mining life of bauxite in China by 20 to 30 years, but a large amount of tailings will be produced in the beneficiation. Usually, under the requirement of Bayer process (A / S greater than 10) industrial producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/04C09C3/12C08L9/02C08K9/00C08K5/10C08L91/06
Inventor 胡岳华杨华明胡小冬
Owner CENT SOUTH UNIV
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