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Calcium hydroxide production process and calcium hydroxide production line

A calcium hydroxide, production process technology, applied in calcium/strontium/barium oxide/hydroxide, chemical instruments and methods, sieves, etc., can solve the problem of low productivity, ungraded calcium hydroxide, high calcination energy consumption problems, to achieve the effect of improving yield, improving efficiency, and reducing calcination time

Inactive Publication Date: 2020-12-25
XUANCHENG YANGLIUQING CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing calcium hydroxide production method mainly uses lime as raw material, which is calcined to form calcium oxide, and then crushed, digested, filtered, and dehydrated. Calcium oxide is not classified, and further sorting is required, and the process is cumbersome

Method used

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  • Calcium hydroxide production process and calcium hydroxide production line
  • Calcium hydroxide production process and calcium hydroxide production line

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Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Such as figure 1 Shown, the calcium hydroxide production process described in the present embodiment comprises the following steps

[0035] S1 Broken

[0036] Crushing the limestone raw material to obtain crushed material;

[0037] S2 Calcination

[0038] Putting the crushed material in S1 into a calciner for calcining to obtain rough calcium oxide;

[0039] S3 digestion

[0040] Put the crude calcium oxide in S2 into the digestion reactor, carry out the digestion reaction, and obtain the calcium hydroxide turbid liquid;

[0041] S4 filtering

[0042] Filtrating the calcium hydroxide turbid liquid in S3 to remove solid impurities to obtain a calcium hydroxide solution;

[0043] S5 dehydration

[0044] The calcium hydroxide solution in S4 is dehydrated to obtain calcium hydroxide powder;

[0045] S6 dry

[0046] The calcium hydroxide powder in S5 is dried;

[0047] S7 sorting

[0048] Sorting the dried calcium hydroxide powder in S6;

[0049] The calciner in ...

Embodiment 2

[0057] A calcium hydroxide production line, applying the above-mentioned calcium hydroxide production process, sequentially includes a crusher, a calciner, a digestion reactor, a filter dehydrator, and a drying device, and the raw materials are sequentially passed through the crusher, the calciner, the digestion reactor, the filter Dehydrator and drying device, the exhaust gas generated in the calciner passes through the crusher and drying device in sequence.

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Abstract

The invention provides a calcium hydroxide production process, which comprises the steps of S1, crushing, S2, calcining, S3, digesting, S4, filtering, S5, dehydrating, S6, drying and S7, sorting, wherein a calcining furnace in the S2 adopts a gas calcining kiln, the S6 and the S7 are completed by adopting a drying device, the drying device comprises an outer cylinder and an inner cylinder, a rotating shaft for driving the inner cylinder to rotate is arranged in the inner cylinder, a plurality of middle cylinders are arranged between the outer cylinder and the inner cylinder, sieve pores are formed in the middle cylinders, and the outer cylinder and the inner cylinder are sequentially divided into a filter residue layer and a plurality of sorting layers from inside to outside; a cylinder bottom capable of being opened and closed is arranged at the bottom of the filter residue layer, a material collecting groove is formed in the bottom of the sorting layer, and the material collecting groove, the outer cylinder and the middle cylinders are arranged at intervals; and waste gas generated by the gas calcining kiln preheats crushed materials in the S and then is led to the inner cylinder.

Description

technical field [0001] The invention relates to the technical field of calcium hydroxide production and processing, in particular to a calcium hydroxide production process and a production line thereof. Background technique [0002] Calcium hydroxide is a white powdery solid with the chemical formula Ca(OH)2, commonly known as slaked lime and slaked lime, and its aqueous solution is called clarified lime water. Calcium hydroxide has the properties of alkali and is a strong base. It is a strong base and can be dissolved in water. Calcium hydroxide is widely used in industry. [0003] At present, the existing calcium hydroxide production method mainly uses lime as raw material, which is calcined to form calcium oxide, and then crushed, digested, filtered, and dehydrated. Calcium oxide is not graded, and further sorting is required, and the process is cumbersome. Contents of the invention [0004] Aiming at the deficiencies of the prior art, the invention provides a calcium...

Claims

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Application Information

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IPC IPC(8): C04B2/10C04B2/04C01F11/16C01F11/02C01F11/06F27B17/00F26B11/08B07B1/22B07B1/46
CPCB07B1/22B07B1/4663C01F11/02C01F11/06C01F11/16C04B2/045C04B2/10F26B11/08F27B17/00
Inventor 杨建林
Owner XUANCHENG YANGLIUQING CHEM CO LTD
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