Main Composition And Characteristics Of Boron

The main constituent minerals of metamorphosed sedimentary boron deposits include

magnesium borate minerals (szaibelyite, ludwigite etc.), silicate minerals (forsterite, humite, ilmenite, hematite, uraninite etc.), sulfides (pyrrhotite, pyrite, chalcopyrite etc.), sulfate minerals (gypsum, apatite etc.) and phosphate minerals. Boron minerals of saline lake boron deposits on the Qinghai-Tibet Plateau are closely associated with a few dozens of elements such as sodium, lithium, potassium, chlorine and sulfur. The ore composition of endogenic skarn boron deposits is also relatively complex, and useful boron minerals such as ludwigite and szaibelyite are associated with a large amount of magnetite. jaw crusher:http://www.hxjq-crusher.com/ 3) Large reserves but poor ore quality There are appreciable quantities of boron ore reserves in China, but the greater majority of boron ores are low-grade and the boron ores with a boron content lower than 12% contribute about 90.74% of the country"s retained reserves. Boron ores of metamorphosed sedimentary boron deposits may be divided into three ore types, szaibelyite ore, ludwigite ore and szaibelyite-ludwigite ore on the basis of their useful components. Their average grade is only 8.27%. Of the three ore types, szaibelyite ore is relatively easy to dress, whereas for boron minerals of the other two ore types, their processing problem has not been completely solved now because they are intimately associated with iron and other minerals and occur as very fine-grained disseminations. The saline lake boron deposits of the Qinghai-Tibet Plateau are divided into solid and liquid deposits. The average B2O3 content of the solid boron deposits is only 3.33%, while that of the liquid boron deposits (brines from saline lakes) is 866.16 mg/L. The ores of endogenic skarn boron deposits has an average grade of only 6.6%.Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,ball mill,combination crusher Welcome all of you to visit our official website.symons cone crusher:http://www.hxjqchina.com/product-list_19.html At present more than 95% of boron materials processed are szaibelyite ore, but it only contributes 6.64% of the total reserves. The ludiwigite ore that accounts for 58.54% of the total reserves is scarcely used because its processing technology has not been completely solved. Saline lake boron ore that takes up 33.13% of the reserves has basically not been developed and utilized now because of limitations of transport and mining conditions of the Qinghai-Tibet Plateau. 4) Overconcentrated distribution of boron occurrences Most of boron deposits and reserves of China are concentrated in Liaoning, Jilin, Qinghai and Tibet. The retained boron ore reserves of the four regions account for almost 90% of the national total, and the rest less than 10% of reserves are scattered in Hubei, Hunan etc. Boron deposits of China have a variety of genetic types, dominated by the metamorphosed sedimentary type, modern saline lake type, skarn salt type and marine sedimentary type. Metamorphosed sedimentaty type deposits of China occur in the Neo-archean Kuandian Group in the eastern Liaoning-southern Jilin region in the northeastern part of the Sino-Ko-rean paraplatform. The boron minerals and boron-iron orebodies in the boron-bearing layer of the Kuandian Group formed simultaneously with magnesian carbonate rocks in this layer.

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