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Method for preparing common-activity calcium carbonate series product and co-producing ammonia chloride

A technology for active calcium carbonate and series products, which is applied in the field of preparing common active calcium carbonate series products for co-production of ammonium chloride, can solve the problem of complex production methods, production processes and equipment that do not have the preparation of common active calcium carbonate series products for co-production of ammonium chloride , high cost and other issues, to achieve the effect of small investment, low cost and large output

Active Publication Date: 2010-09-08
LIWANG CHEM NANTONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But these traditional production methods, cost height, productive rate are low, production technology and equipment are all very complicated; And also do not have the relevant report of the method for the coproduction ammonium chloride of preparation common active calcium carbonate series product at present

Method used

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  • Method for preparing common-activity calcium carbonate series product and co-producing ammonia chloride
  • Method for preparing common-activity calcium carbonate series product and co-producing ammonia chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Use 500 kg of limestone coarse powder to mediate into an emulsion, and the limestone coarse emulsion is injected into the reactor 1 through the calcium carbonate feed line 8, and then ammonium chloride is injected into the reactor, wherein the limestone emulsion and the dissolved ammonium chloride According to the mass ratio of pure substances 1: 0.87 mixed in the reactor for reaction, mixed in the reactor, the rotating speed of the agitator is 60 rpm, the reaction generates carbon dioxide and water, and the carbon dioxide is transported to the ammonium with the pipeline 9 of the carbon dioxide circulation line. Recycle in the carbonizer, and suction filter pump 2 gets 536.5 kilograms of calcium chlorides.

[0028] Calcium chloride is evenly mixed and injected into the ammonium carbonizer 3 as mother liquor, which contains ammonium hydroxide configured in advance with a mass ratio of 1:0.95; start the stirrer to make the mixed solution uniform and carry out ammonium carb...

Embodiment 2

[0030] Use 500 kg of limestone coarse powder to mediate into an emulsion, and the limestone coarse emulsion is injected into the reactor 1 through the calcium carbonate feed line 8, and then ammonium chloride is injected into the reactor, wherein the limestone emulsion and the dissolved ammonium chloride According to the mass ratio of pure substances 1: 1.07 mixed in the reactor for reaction, mixed in the reactor, the reaction generates carbon dioxide and water, the carbon dioxide is transported to the ammonium carbonizer by the pipeline 9 of the carbon dioxide circulation line for recycling, and the suction filter pump 2 Suction filtration yielded 659.8 kg of calcium chloride.

[0031] Calcium chloride is evenly mixed and injected into the ammonium carbonizer 3 as mother liquor, which contains ammonium hydroxide configured in advance with a mass ratio of 1:0.95; start the stirrer to make the mixed solution uniform and carry out ammonium carbonization, that is, under the situat...

Embodiment 3

[0033] Use 500 kg of limestone coarse powder to mediate into an emulsion, and the limestone coarse emulsion is injected into the reactor 1 through the calcium carbonate feed line 8, and then ammonium chloride is injected into the reactor, wherein the limestone emulsion and the dissolved ammonium chloride According to the mass ratio of pure substances 1: 1.27 mixed in the reactor for reaction, mixed in the reactor, the reaction generates carbon dioxide and water, carbon dioxide is transported to the ammonium carbonizer by the pipeline 9 of the carbon dioxide circulation line for recycling, and the suction filter pump 2 Suction filtration yielded 783.2 kg of calcium chloride.

[0034]Calcium chloride is evenly mixed and injected into the ammonium carbonizer 3 as a mother liquor, which contains ammonium hydroxide configured in advance with a mass ratio of 1: 1.15; start the stirrer to make the mixed solution uniform and carry out ammonium carbonization, that is, under the situatio...

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Abstract

The invention relates to a method for preparing common-activity calcium carbonate series products and co-producing ammonia chloride, belonging to the technical field of the preparation method of inorganic salt filling materials. The main technical scheme is that limestone is used for reacting with ammonia chloride to obtain calcium chloride, carbon dioxide and ammonia water; and the carbon dioxide is fed to ammonium carbonization at a next step for cyclic utilization, the calcium chloride, the ammonia water and surfactant are fully mixed in an ammonium carbonizer according to certain proportions, the carbon dioxide coming from a reactor is simultaneously fed for carbonization till completion to obtain common-activity calcium carbonate, and finally the obtained common-activity calcium carbonate is centrifuged, dried and air-separated to obtain calcium carbonate of various grades. By adopting the ammonium carbonization method and recycling reactants, the invention has the advantages of small investment, low cost, simple production and high yield.

Description

technical field [0001] The invention relates to the technical field of preparation methods of inorganic salt filling materials, in particular to a method for preparing common active calcium carbonate series products and co-producing ammonium chloride. Background technique [0002] Active calcium carbonate is not only non-toxic, odorless, non-irritating, non-flammable, low refractive index, easy to color, insoluble in water, stable in the air, but also has high whiteness, good fluidity, good gloss, uniform dispersion, and large filling capacity. and other characteristics; as a high-grade filler with high filling content, active calcium carbonate is widely used in rubber, plastic, plastic-steel doors and windows, PVC cable materials, advanced coatings, pipes, tires, shoe soles, polyethylene blown film, sealing strips, FRP products, Cable packing cloth, paper making, building materials, printing ink, daily chemicals, textiles, feed, food additives and other industries. The pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/16C01F11/46
CPCY02P20/141
Inventor 王嘉兴
Owner LIWANG CHEM NANTONG
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