论文部分内容阅读
(一)资源状况世界上以开采火山沉积型硼矿为主,其储量约占总储量的90%,具有储量大、品位高、开采加工容易等特点,美国、土耳其等主要产硼国家大部分是开采此类硼矿床。我国硼矿床主要是沉积变质型,分布在东北,储量占一半以上;其次是盐湖硼矿,分布在青海、西藏,储量约占1/3;其它不足2%的矽卡岩型硼矿分布在湖南、四川、江苏等省。1985年我国硼矿产量37.73万吨(标矿,B_2O_3 12%),其中98%产于东北。东北硼矿带自辽宁营口至吉林通化,长300余公里,宽数十公里,已发现大小矿点112个,主要矿区有营口后仙峪、凤城二台子、宽甸砖庙沟杨木杆子、集安高台沟等中型硼镁石矿及翁泉沟、五道岭等大型硼镁铁矿。硼镁铁矿目前暂不能利用,储量占全国储量一半以上。
(I) Resource status The world is dominated by volcanic sedimentary boron deposits, accounting for about 90% of the total reserves, with the features of large reserves, high grade, easy exploitation and processing. Most of the major boron producing countries in the United States and Turkey Is the exploitation of such boron deposits. China’s boron deposits are mainly sedimentary metamorphic, distributed in the northeast, reserves account for more than half; followed by Salt Lake boron ore, located in Qinghai, Tibet, reserves account for about 1/3; other less than 2% skarn type boron ore distribution Hunan, Sichuan, Jiangsu and other provinces. In 1985, China produced 377,300 tons of boron ore (standard mine, B 2 O 3 12%), of which 98% was produced in the northeast. Northeastern boron belt from Yingkou, Liaoning to Jilin Tonghua, more than 300 kilometers long, a few dozen kilometers wide, has found the size of the mine 112, the main mining Yingkou Yingxian, Fengcheng Ertai, Kuandian brick temple ditch poplar pole , Set the Gaotao ditch and other medium-sized boehmite and Weng Quan ditch, Wudaoling and other large-scale boron-magnesium iron ore. Bauxite currently unavailable, reserves account for more than half of the national reserves.