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Preparation method of diatomite filter aid

A technology of diatomite and filter aid, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of complex process and high energy consumption, and achieve the effect of simple process, low energy consumption, and reduced quality control cost

Inactive Publication Date: 2018-11-30
临江市长白山助滤剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems of high energy consumption and complicated process in the prior art, the present invention provides a preparation method of diatomite filter aid, which is simple, easy to implement, low in cost and more suitable for large-scale production

Method used

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preparation example Construction

[0022] The invention provides a kind of preparation method of diatomite filter aid, comprises the following steps:

[0023] (1) Drying the diatomite raw ore to a moisture content of 28% to 32%;

[0024] (2) mixing the diatomite raw ore dried in step (1) with the fluxing agent evenly, and performing crushing, grading and winnowing in sequence to obtain materials with a moisture content of 3-5%;

[0025] (3) calcining the material in step (2) at 500-900°C;

[0026] (4) Crushing, grading and winnowing the material calcined in step (3) in sequence to obtain the diatomite filter aid.

[0027] Among them, step (1) the diatomite raw ore itself contains about 55% moisture, and after being dried by the drying line, the moisture becomes between 28% and 32%, which solves the problem that the production line with high raw ore moisture cannot be used. The drying temperature is 550-650°C, preferably 600°C.

[0028] The flux described in step (2) is sodium carbonate, and the addition amou...

Embodiment 1

[0036] Embodiment 1 model is the preparation of the diatomite filter aid of TS10#

[0037] Methods as below:

[0038] (1) Take the diatomite raw ore and dry it to a moisture content of 28% at a temperature of 650° C. using a drying line;

[0039] (2) The diatomite raw ore dried in step (1) is sent to the carding fan, classifier and cyclone separator in turn by a screw conveyor for crushing, classification and winnowing, and the speed of the classifier for wet end classification is 1 Control at 5%, the classifier speed of wet end classification 2 is controlled at 5%, and the material with moisture content of 3% is obtained;

[0040] (3) calcining the material of step (2) in a calcining kiln at 500°C;

[0041] (4) The material calcined in step (3) is sent to the carding fan, pulverizer and classifier successively for crushing, grading and winnowing. The speed of the classifier is controlled at 5%, and the speed of the classifier for dry end classification 3 is controlled at 5...

Embodiment 2

[0042] Embodiment 2 model is the preparation of the diatomite filter aid of TS20#

[0043] Methods as below:

[0044] (1) Take the diatomite raw ore and dry it to a moisture content of 32% at a temperature of 550° C. using a drying line;

[0045] (2) The diatomite raw ore dried in step (1) is sent to the carding fan, classifier and cyclone separator in turn by a screw conveyor for crushing, classification and winnowing, and the speed of the classifier for wet end classification is 1 Control at 10%, the classifier speed of wet end classification 2 is controlled at 20%, and the material with moisture content of 5% is obtained;

[0046] (3) Calcining the material in step (2) in a calcination kiln at 700°C;

[0047] (4) The material calcined in step (3) is sent to the carding fan, pulverizer and classifier successively for crushing, grading and winnowing. The speed of the classifier is controlled at 30%, and the speed of the classifier for dry-end classification 3 is controlled...

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Abstract

The invention discloses a preparation method of a diatomite filter aid in order to solve the technical problems of large energy consumption and complicated process in the prior art, and belongs to thetechnical field of filter aid production. The method comprises the following steps: (1) drying a diatomite raw ore until the moisture content is 28-32%; (2) uniformly mixing the dried diatomite raw ore obtained in step (1) with a flux, and sequentially carrying out breaking, grading and air selection to obtain a material having a moisture content of 3-5%; (3) calcining the material obtained in step (2) at 500-900 DEG C; and (4) sequentially performing breaking, grading and air selection on the calcined material obtained in step (3) to obtain the diatomite filter aid. The method has the advantages of simplicity, easiness in implementation, low energy consumption, easiness in process control, reduction of the quality control cost, realization of stable quality of the produced product, meeting of relevant national standards, and suitableness for large-scale production.

Description

technical field [0001] The invention relates to the technical field of filter aid production, in particular to a preparation method of diatomite filter aid. Background technique [0002] Diatomaceous earth is a kind of main component is amorphous SiO 2 The siliceous sedimentary rock is formed by the remains of ancient diatoms through long-term geological processes. Its structure is characterized by the diatom structure of regularly distributed nanopores such as discs, circular sieves, rings, and columns. Due to the unique diatom structure of diatomite, it has many special physical and chemical properties, which can be used to produce filter aids, adsorbents, catalyst carriers, functional materials, water treatment agents and air purifiers, asphalt modifiers, etc. . Among them, filter aid is one of the main deep-processing products of diatomite, which is widely used in the filtration and clarification of beer, beverages, food, pharmaceutical preparations, etc. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/14B01J20/30
CPCB01J20/14
Inventor 李晓玲
Owner 临江市长白山助滤剂有限公司