摘要
钾盐矿是老挝的优势矿产资源之一,主要分布于老泰边界湄公河沿岸的平原地带。钾盐矿的主矿体呈层状产于塔贡组下段膏盐岩亚段(E1tg1-1)上部,为海源陆生矿床。中国企业在老挝已探获氯化钾(KCl)资源/储量40亿t,远景资源量大于100亿t。中国企业已建成氯化钾生产装置,总产能达到77万t/a,远景发展规模将达715万t/a。中国企业在老挝勘查开发钾盐中存在的主要问题有:1)拥有的矿业权分布范围广、面积大;2)勘查程度过高,探获的氯化钾(KCl)资源储量大、服务年限长,光卤石型矿石的生产工艺尚未成熟,钾盐开发投资大、成本高、投资返本周期长,以及能源供给对钾盐开发的影响。据此提出以下建议:1)压缩钾盐的地质勘查投资;2)适度控制钾盐矿产的开发规模;3)注意钾盐产品的供求关系变化;4)加强钾盐开发工艺的技术革新;5)加强伴生溴元素的综合利用;6)努力寻找钾石盐型钾盐矿床;7)注意泰国寻找钾盐矿后引起的钾盐供求关系变化;8)积极申报煤炭资源区块、探获资源储量。
Laos possesses abundant potash resources,which are mainly distributing along the Mekong river plain. The potash bed is hosted in the upper E1tg1- 1,a marine-sourced continental deposit. Chinese mining companies acquired KCl resource of 4 billion tons by exploration,with over 10 billion tons in inferred resource,also set up processing facilities for producing KCl with a capacity of 770 kt / a,up to 7 150 kt / a for future planning. Issues in Laos＇ s potash exploration and development chiefly include large mining license area,over exploration,large KCl reserve,long term mining life,but the processing carnallite is not a mature technology. The large investment,high cost and long pay back and shortage of energy impact potash development. This paper presents suggestions in diminishing exploration investment,controlling development size,paying attentions on demand-supply,boosting potash processing technology,recovering Br,searching for sylvite deposit,exploring coal resources.
出处
《资源与产业》
2016年第2期44-47,共4页
Resources & Industries
关键词
老挝
钾盐矿床
开发现状
对策建议
Laos
potash deposit
development actuality
suggestions
