Process for preparing barium chloride by chlorating and calcining carbonate-type barium ore

A carbonate type, chlorinated roasting technology, applied in the direction of calcium/strontium/barium chloride, calcium/strontium/barium halide, etc., can solve the problem of long-distance transportation and storage of hydrochloric acid, low chloride effective utilization, production Cost increase and other issues, to achieve the effect of low cost, high effective utilization, and reduced transportation cost

Inactive Publication Date: 2004-12-08
李守德
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  • Abstract
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Problems solved by technology

These reactions will consume a large amount of hydrochloric acid, the effective utilization rate of its chloride root is low, resulting in an increase in production cost, and hydrochloric acid is easy to volatilize, discharge a large amount of waste liquid, and seriously pollute the environment. Utilizing the hydrochloric acid method to prepare barium chloride has a long process flow, and the mining area There are no hydrochloric acid resources, and hydrochloric acid is extremely corrosive, which makes the long-distance transportation and storage of hydrochloric acid difficult, and increases the manufacturing cost
At present, the cost of producing one ton of barium chloride is about 1450 yuan

Method used

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  • Process for preparing barium chloride by chlorating and calcining carbonate-type barium ore

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with embodiment:

[0028] like figure 1 Shown, the present invention mainly carries out successively by following steps:

[0029] a. Put the carbonate-type barium ore in the crusher 1 for crushing, and then crush it through the crusher 2, generally crushing it into 60-120 mesh;

[0030] B. the pulverized carbonate type barium ore and calcium chloride or magnesium chloride fine powder are stirred and mixed in the mixer 3 in the ratio of 1: 0.3~0.8 by pure substance weight ratio;

[0031] c. Send the uniformly mixed mixture into the tunnel kiln or rotary kiln 4, and roast it at a temperature of 500°C to 1500°C. The general roasting time is 4 hours, so that the mixture can fully react to form barium chloride and calcium carbonate or magnesium carbonate. body;

[0032] d. Put the melt of barium chloride and calcium carbonate or magnesium carbonate out of the furnace into the leaching device 5, then add ...

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Abstract

A process for preparing barium chloride from carbonate type barium ore includes calcining said barium ore along with calcium (or magnesium) chloride at 500-1500 deg.c to obtain melt of barium chloride and calcium (or magnesium) carbonate, immersing to obtain solution of barium chloride and dregs, solid-liquid separation, concentrating the solution of barium chloride, crystallizing, centrifugation and drying. Its advantages are high yield and purify of product, simple process, low cost and basically no discharge of waste liquid.

Description

(1) Technical field [0001] The invention relates to a method for preparing barium chloride, in particular to a method for preparing barium chloride by chlorinating and roasting carbonate type barium ore. (2) Technical background [0002] The existing method of utilizing carbonate-type barium ore to produce barium chloride is generally the hydrochloric acid method, which is about to react carbonate-type barium ore with hydrochloric acid to generate barium chloride, and its reaction equation is: [0003] <chemistry num="001"> <chem file="01128989_cml001.xml" / > < / chemistry> [0004] Large-scale carbonate-type barium ore deposits have been found in Chongqing and Sichuan. Since the carbonate-type barium ore is mixed with a large amount of impurities such as calcium carbonate and magnesium carbonate, in the process of preparing barium chloride with hydrochloric acid, it is bound to The following side effects occurred: [0005] <chemistry num="002"> ...

Claims

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Application Information

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IPC IPC(8): C01F11/28
Inventor 李守德
Owner 李守德
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