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Fluorine removing technique pointed of newly discovered fluorine source of fluorosis at western area of Guizhou province

A fluoride reduction and fuel technology, which is applied in the petroleum industry, solid fuel, fuel and other directions, can solve the problems of fluoride poisoning improvement, influence promotion, and may not be very practical, and achieve the effect of taking into account combustion performance, easy promotion, and good fluorine fixing effect.

Inactive Publication Date: 2006-01-11
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

Moreover, although the required materials are cheap, they may not be very practical for residents in remote areas, which has affected its promotion to a large extent, failed to improve the situation of fluorosis in this area, and constantly found new endemic fluorosis diseases Area

Method used

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  • Fluorine removing technique pointed of newly discovered fluorine source of fluorosis at western area of Guizhou province
  • Fluorine removing technique pointed of newly discovered fluorine source of fluorosis at western area of Guizhou province
  • Fluorine removing technique pointed of newly discovered fluorine source of fluorosis at western area of Guizhou province

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[0029] Measuring principle and method:

[0030] According to the National Standard of the People’s Republic of China GB / T4633-1997 "Method for the determination of fluorine in coal": Weigh 0.5 (±0.0002) g of air-dried coal sample and 0.5 g of quartz sand, mix them in a combustion boat, and cover with an appropriate amount of quartz sand On the top, put into a tubular heating furnace, pass in oxygen and water vapor, gradually heat to 1100°C, and heat at constant temperature for 15 minutes. A 100mL volumetric flask is placed at the lower end of the condenser tube to receive the condensate, and it is controlled within 85mL. After the combustion and hydrolysis are completed, add 3 drops of bromocresol green indicator to the condensate, and neutralize with sodium hydroxide solution until the indicator turns blue. Add ionic strength buffer solution, dilute with water to a constant volume, and leave for half an hour. Using the fluoride ion selective electrode as the indicator electrode a...

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Abstract

A defluorinating fuel for preventing fluorine poison in western Guizhou province of China is prepared from late-Perm coal, the clay rock taken from Emei mountain and Longtan, and Ordovician lime stone.

Description

Technical field [0001] The invention relates to a combined fuel, in particular to a combined fuel with a newly discovered fluorine source for fluorosis in western Guizhou. Background technique [0002] Guizhou Province is the most serious “smoke-type (?)” endemic disease of fluorosis in China. There are 37 wards in 87 counties and cities in the province, with 19 million threatened populations, more than 10 million dental fluorosis patients, and skeletal fluorosis. There are 640,000 patients. Among them, fluorosis in western Guizhou is well-known at home and abroad, with Zhijin, Dafang and Bijie being the most serious. The epidemiological survey results show that in Hehua Village, Chengguan Town, Zhijin County, 80% of patients suffer from skeletal fluorosis, and at least one member of almost every family has lost the ability to work or has been paralyzed; the local health department in 2003 In the newly discovered village of Puweng Township, Zhijin County, the hardest hit by fluor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04
Inventor 代世峰李薇薇
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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