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A kind of preparation method of diatomite dry powder

A technology of diatomite and diatomite, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem of ineffective improvement of the shape and structure of micropores, reduce freeze-drying costs, and improve finished products. Output rate, improve the effect of noise reduction

Active Publication Date: 2019-11-05
马鞍山市银洁建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the shape and structure of micropores are not effectively improved during the scrubbing process of diatomite ore in the prior art, the present invention provides a method for preparing diatomite dry powder, which uses vacuum freeze-drying to scrub the prepared After the diatomite is dried, the uniformity of the micropore structure and shape is improved, and the effects of noise reduction, adsorption, air humidity adjustment and formaldehyde removal are improved.

Method used

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  • A kind of preparation method of diatomite dry powder
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  • A kind of preparation method of diatomite dry powder

Examples

Experimental program
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Embodiment 1

[0054] The preparation method of a kind of diatomite dry powder of this embodiment, its production process is as follows: feed the diatomite ore in the diatomite raw ore bin into the belt conveyor through the feeder, transfer to the classifying sieve, and the oversize enters the Hand-selected belts, after manually picking out debris such as branches, plastic films, iron wires and large stones, the diatomite ore is fed into the crusher, and the crushed materials and the underscreen of the grading screen are fed by the belt conveyor Magnetic separator, the diatomite ore after the magnetic material is selected enters the buffer bin, and then is fed into the metering belt conveyor by the quantitative feeder, and the diatomite ore is fed into the four-slot scrubbing machine. , adjust the concentration of the pulp to 35%-40%, add NaOH to the first tank to make the pH value 9-10, the pulp after the scrubbing machine enters the dilution tank, add water to make the concentration 20%-25%...

Embodiment 2

[0057] The preparation method of a kind of diatomite dry powder of this embodiment, diatomite raw ore is the same as embodiment 1, basic steps are the same as embodiment 1, the difference and improvement are: the diatomite ore is scrubbed and then subjected to sedimentation and separation to obtain diatomite ore. Diatomite, the diatomite is dried by vacuum freeze-drying method to obtain diatomaceous earth dry powder, and the vacuum freeze-drying method is used to dry the diatomite obtained by scrubbing, and it is observed by electron microscope, as follows: figure 1 and 2 As shown in the comparison chart, its uniformity and specific surface area have been greatly improved, and its technical effects of noise reduction, adsorption, air humidity adjustment and formaldehyde removal have been improved.

Embodiment 3

[0059] A kind of preparation method of diatomite dry powder of the present embodiment, diatomite raw ore is the same as embodiment 2, and its production process is as follows:

[0060] Step 1. Grading: the diatomite ore in the diatomite raw ore bin is transferred to the grading sieve by the belt conveyor for grading;

[0061] Step 2, selection: the sieved material enters the manual selection belt, and the impurities are manually selected;

[0062] Step 3, crushing: the raw ore is crushed after selection;

[0063] Step 4. Magnetic separation: the crushed material and the undersize of step 1 are transferred to the magnetic separator for magnetic separation

[0064] Step 5. Scrubbing: the diatomite ore removed from the magnetic ore is transferred to a scrubbing machine for scrubbing. The scrubbing machine is a three-tank scrubbing machine, which is a pre-wash tank, a fine-wash tank and a tail-wash tank. After adding water to the pre-wash tank, the pulp Adjust the concentration ...

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Abstract

The invention discloses a preparation method of diatomaceous earth dry powder and belongs to the technical field of building materials. According to the preparation method of the diatomaceous earth dry powder, by means of the steps of classifying, scrubbing, screening, separating, traying, quick freezing, freeze drying, smashing and the like, the diatomaceous earth dry powder is prepared, the vacuum freeze drying method is fully utilized for drying diatomite prepared through scrubbing, by means of observation of an electron microscope, the uniformity is improved greatly, the specific area is increased greatly, the technical effects of noise reducing, adsorbing, air humidity adjusting and methanal removing are improved, and the problem that in the prior art, in the diatomaceous earth ore scrubbing process, the shape and the structure of micro holes cannot be improved effectively is solved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a preparation method of diatomite dry powder. Background technique [0002] Diatomite is a natural siliceous porous non-metallic mineral with a natural nano-microporous structure, large specific surface area, small bulk density, and the main component is amorphous SiO2. It is widely used in beer, beverages, drinking water, industrial oils, etc. Filtration and sewage treatment, building materials, chemical industry, agriculture, rubber and plastic fillers, paper fillers and other fields are indispensable functional mineral materials in many industries and have broad application prospects. [0003] my country is a country with large reserves of diatomite, second only to the United States in the world, ranking second. However, most of the diatomite reserves in my country are low-grade resources, and there are few high-quality diatomite resources that can be directly appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 丁一恒
Owner 马鞍山市银洁建材科技有限公司