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%.
At present more than 95% of boron materials processed are szaibelyite ore, but it only contributes 6.64%... [continues]
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