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Preparation method of high fineness calcium carbonate functional composite powder

A calcium carbonate and composite powder technology, applied in chemical instruments and methods, dyeing polymer organic compounds treatment, inorganic pigment treatment and other directions, can solve the problems of limited product performance improvement, poor product targeting, and low added value of products, etc. achieve the effect of avoiding secondary agglomeration

Active Publication Date: 2014-10-29
ANHUI JIANGDONG TECH POWDER CO LTD
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Problems solved by technology

Due to the large reserves, good quality, broad market and good development space of calcium carbonate in China, the output and demand of calcium carbonate in China have increased rapidly in the past two decades, but most of them are used as ordinary fillers. Use, the product is not targeted, generally belongs to low-end products, and the performance improvement of the product is limited, so there are problems such as low added value of the product.

Method used

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Embodiment Construction

[0021] The present invention will be further described in detail according to the examples below.

[0022] A preparation method of high-fineness calcium carbonate functional composite powder, the steps comprising:

[0023] (1) Calcite raw ore is washed, air-dried and pulverized;

[0024] (2) Use a vibrating sieve to perform primary classification and impurity removal on the pulverized powder, and reclassify the powder with different particle size distributions by adjusting the cyclone classification parameters to an average particle size of 0.65 microns to 8 microns, and a d97 of 1.25 microns ~45 microns;

[0025] (3) In terms of weight percentage, 30% to 70% of the powder that has been classified and removed, 3% to 25% of the metal oxide sol ground by the sol mill, 40% to 70% of water, and 0.5% to 5.5% of the ground The dispersant is mixed, stirred and ground. The surface of the heavy calcium carbonate in the powder is coated with inorganic materials. The thickness of the c...

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Abstract

The invention discloses a method for preparing high-fineness calcium carbonate functional composite powder. The method comprises the following steps of: washing calcite raw ores, airing, and crushing; grading by a vibrating screen; mixing for preparing; wrapping; drying; and modifying. The method has the advantages that the high-fineness calcium carbonate functional composite powder is high in quality, the filling amount of calcium carbonate is improved, and the secondary agglomeration of granules is avoided.

Description

technical field [0001] The invention relates to a preparation method of high-fineness calcium carbonate functional composite powder, which belongs to the technical field of chemical material production and manufacturing. Background technique [0002] Calcium carbonate is a non-metallic inorganic filler with the largest amount and widest application. Due to its wide range of raw materials, low price, non-toxicity and high whiteness, it is widely used in plastics, rubber, papermaking, coatings and other fields. Due to the large reserves, good quality, broad market and good development space of calcium carbonate in China, the output and demand of calcium carbonate in China have increased rapidly in the past two decades, but most of them are used as ordinary fillers. Use, the pertinence of the product is not strong, generally belongs to the low-grade product, the performance improvement of the product is limited, so there are problems such as low added value of the product. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/02C09C3/04C09C3/06C09C3/10
Inventor 胡坤乐毅乐力
Owner ANHUI JIANGDONG TECH POWDER CO LTD
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