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Treatment and utilization method for sulphur-containing mother solution produced from diborate production of paigeite

A technology for boron iron ore and borax, which is applied in the field of treatment and utilization of sulfur-containing mother liquor, can solve problems such as low yield and unqualified product borax, and achieve the effects of improving yield, high qualification rate and avoiding sulfur pollution.

Inactive Publication Date: 2010-12-08
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to overcome the Borax caused by the accumulation of sulfur in the production of borax in the carbon-soda process. 2 o 3 Low yield and unqualified product borax, provide a new treatment and utilization method for the mother liquor produced by carbon-soda processing of boron ore to produce borax

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Using the boiled boron fine powder containing 0.30% of sulfur, adopting the borax mother liquor produced by reacting the batching liquid-solid ratio of 1.4 in the carbon-soda process, adopting the following steps to process.

[0017] Firstly, the reaction solution generated by carbonization is filtered and then cooled to about 30° C. to crystallize and separate borax to obtain borax mother liquor. Quantify in the storage tank and measure its volume. Then, the borax mother liquor is divided into 1 / 2 and sent to the batching section of boric acid production, and the remaining borax mother liquor is returned to the batching section of borax production for recycling. At this time, 1 / 2 of the sulfur in the borax mother liquor is transferred to the boric acid production process. After a series of processes of carbonization, separation, evaporation, and acidolysis in the boric acid production process, the mother liquor produced per ton of borax product is transferred to the b...

Embodiment 2

[0020] Use the boiled boron fine powder containing 0.40% sulfur, and adopt the following steps to process the borax mother liquor produced by reacting the batching liquid-solid ratio of 1.4 in the carbon-soda process.

[0021] Firstly, the reaction solution generated by carbonization is filtered and then cooled to about 30° C. to crystallize and separate borax to obtain borax mother liquor. Quantify in the storage tank and measure its volume. Then, the borax mother liquor is divided into 2 / 3 and sent to the batching section of boric acid production, and the remaining borax mother liquor is returned to the batching section of borax production for recycling. At this time, 2 / 3 of the sulfur in the borax mother liquor is transferred to the boric acid production process. After a series of processes of carbonization, separation, evaporation, and acidolysis in the boric acid production process, the mother liquor produced per ton of borax product is transferred to the boric acid prod...

Embodiment 3

[0024] Using cooked boron fine powder with a sulfur content of 0.50%, the mother liquor produced by reacting with a ratio of liquid to solid of 1.4 in the carbon-soda method process is processed by the following steps.

[0025] Firstly, the reaction solution generated by carbonization is filtered and then cooled to about 30° C. to crystallize and separate borax to obtain borax mother liquor. Quantify in the storage tank and measure its volume. Then, the borax mother liquor is divided into 4 / 5 and sent to the batching section of boric acid production, and the remaining borax mother liquor is returned to the batching section of borax production for recycling. At this time, 4 / 5 of the sulfur in the borax mother liquor is transferred to the boric acid production process. After a series of procedures, after the mother liquor produced per ton of borax product is transferred to the boric acid production process, the boric acid product will increase by 107.5Kg, and the sodium sulfate...

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Abstract

The invention discloses a method for treating and utilizing a mother solution containing sulfur produced by borax production of paigeite, which is characterized in that a borax mother solution containing the sulfur produced by using a CO2-soda method to process the paigeite for reaction to produce borax is divided into two parts for utilization according to the volume; the partial borax mother solution is transferred to a batching working section used for the production of the borax, and is used as a raw batching solution of a boric acid production process; then boron in the borax mother solution is transformed into a boric acid product to be separated through carbon decomposition, separation, evaporation and acidolysis working procedures of a boric acid production technology, and the obtained borax mother solution is further evaporated and salted out to ensure that the sulfur in the borax mother solution is transformed into a sodium sulfate byproduct to be separated; the remaining borax mother solution is returned to the batching working section used for the production of the borax, and is taken as the raw batching solution; and the content of sulfate is less than 0.2 percent calculated as SO4 in a finally obtained borax product. The clean production of zero emission of the borax mother solution and no sulfur pollution can be realized according to the method for treating and utilizing two parts of borax mother solutions.

Description

technical field [0001] The invention belongs to the field of basic inorganic chemicals, and relates to a method for processing and utilizing sulfur-containing mother liquor produced when boronite is processed by carbon-soda method to produce borax. The process of boric acid. technical background [0002] Ferroboron ore is a proven large-scale boron-iron symbiotic deposit in my country, in which iron and boron reserves are large-scale, and it is a mineral resource with high comprehensive utilization value. Because the ore contains more pyrrhotite, pyrite, and chalcopyrite, the sulfur content is relatively high, and the sulfur is about 1.0%. The boron iron ore is dynamically calcined after beneficiation to obtain boron fine powder with a sulfur content of 0.3% to 0.5%. [0003] Sodium tetraborate decahydrate (commonly known as borax) is a chemical product with a wide range of uses, known as the "parent product" of borides. At present, in industry, the carbon-soda method is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/10C02F9/10C02F1/04
Inventor 王洁于长水董广前宋海燕安峰曹宏伟周弘强
Owner CHINA NAT OFFSHORE OIL CORP