stone coal造句

• Study on technologyical conditions for the extraction of vanadium from stone coal residue
  石煤矿渣中钒浸取工艺条件研究
• Determination of trace tantalum in stone coal slag with flow injection - ion exchange separation and spectrophotometry
  分光光度法测定煤矸石中痕量钪
• Selenium concentration and distribution pattern of human hair and the affecting factors in stone coal exposed environment
  石煤暴露环境中发硒的含量分布及影响因素
• Determination of trace tantalum in stone coal slag with flow injection - ion exchange separation and preconcentration - spectrophotometry
  分光光度法测定石煤渣中痕量钽
• Stone coal and its ash , dust , corn , chili , water in vat and boiled water were sampled from the inhabitants ' houses , and fluorine in these media was determined
  采集居民家中石煤、石煤燃后底灰、室内降尘、玉米、辣椒、水缸水和开水，分析其含氟量，研究石煤燃烧时氟的迁移富集机制。
• The state shall encourage coal mining enterprises to develop coal washing and processing as well as comprehensive exploitation and utilization of coalbed methane , gangue , coal slime , stone coal and peat
  国家鼓励煤矿企业发展煤炭洗选加工，综合开发利用煤层气、煤矸石、煤泥、石煤和泥炭。
• Contrasting stone coal to the soil developed from it and water to water leached from stone coal shows that slight fluorine pollution of surface water and plant resulted from weathering of stone coal and leaching
  摘要通过对比典型剖面上的石煤及其风化发育的土壤的氟含量、流经石煤层的水与不经过石煤层的水的氟含量，研究石煤风化、淋溶时氟对土壤、地表水和农作物的影响。
• This paper introduced the improves of roasting - sodium processing and such pollution - free processing as acid leaching - extration , roasting in air - acid leaching - extration , liming roasting - alkali leaching on extraction of v2o5 from stone coal , the total recovery rate obtains enhances , the industrial application prospect is good
  摘要介绍了石煤提钒传统工艺的改进以及酸法萃取、无盐焙烧酸浸萃取、氧化焙烧碱浸等几种从石煤无污染提取五氧化二钒的工艺流程，上述工艺不但生产过程无环境污染，钒的回收率还大有提高，是很有前途的清洁生产工艺。