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Continuous technological process for producing calcium sulfate whiskers on a large scale

A technology of calcium sulfate whiskers and process methods, which is applied in the field of producing calcium sulfate whiskers, and can solve problems such as large fluctuations in whisker length-to-diameter ratio in intermittent operation cycles

Active Publication Date: 2014-05-07
武善东 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This intermittent operation method brings a lot of inconvenience to large-scale industrial production:
[0010] 1. Adding or discharging liquid to the whisker synthesizer is a manual operation and requires operators; inconsistent intermittent operation cycles can easily lead to large fluctuations in the aspect ratio of whiskers;

Method used

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  • Continuous technological process for producing calcium sulfate whiskers on a large scale

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Embodiment Construction

[0056] The technical scheme that the present invention takes comprises the following steps:

[0057] a, the preparation contains water-soluble Ca 2+ solution; in this step in continuous production, there are two main guarantees, one is to dissolve Ca 2+ The solution does not contain SO 4 2- Ions, the present invention is to use the stored Ca 2+ prepared from a dilute solution; the second is the water-soluble Ca 2+ The source of the solution will ensure that the preferred raw materials of the present invention all meet the needs of large-scale industrial production. The preferred water-soluble Ca of the present invention 2+ The solution consists of:

[0058] 1) Use HCl, HNO 3 、H 3 PO 4 Or its mixed acid in any proportion, decompose phosphorus-containing minerals to prepare water-soluble Ca 2+ The solution;

[0059] 2) Water-soluble CaCl containing NaCl discharged by ammonia-alkali process 2 ;

[0060] 3) Water-soluble Ca prepared by reacting waste acid in the pickl...

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Abstract

Disclosed is a continuous process for large-scale production of calcium sulfate whisker, which solves the problem that the current large-scale production of calcium sulfate whisker cannot be produced continuously. Large-scale continuous synthesis of calcium sulfate whisker may be achieved by the present invention by following five basic requirements for production of calcium sulfate whisker, namely, diluted solution, stable salt content, low rate, uniform stirring, long aging (time), and modified conditions for synthesizing the calcium sulfate crystal. The present invention further reduces the manual workload and lowers the technical requirements, and has unique advantages of being simple, high efficient, energy saving and environmental friendly, and excellent quality of whisker.

Description

Technical field [0001] The invention relates to a method for producing calcium sulfate whiskers, in particular to a continuous process for industrialized large-scale production of calcium sulfate whiskers. Background technique [0002] In the inventor's disclosed patent application document "a new method for large-scale production of calcium sulfate whiskers" (publication number 101168852A), the technical solution comprises the following steps: [0003] a, the preparation contains water-soluble Ca 2+ solution; (including HCl, HNO 3 、H 3 PO 4 Or its mixed acid in any proportion, decompose phosphorus-containing minerals to prepare water-soluble Ca 2+ The solution;) [0004] b. The preparation contains water-soluble SO 4 2- solution; (contains H 2 SO 4 The solution;) [0005] c, respectively purify the above-mentioned water-soluble Ca 2+ and SO 4 2- solution, and store them separately for later use; [0006] d. Use purified water-soluble Ca 2+ and SO 4 2- The s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/46C30B29/62C30B7/14
CPCC30B7/14C30B29/46C30B29/62
Inventor 武善东武征张建华武善斌
Owner 武善东
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