1.Thes study and bring forward a new formula for acid bleaching of barite powders containing impurities such as fluorite and calcite.
研究并提出用稀鹽酸、硼酸和反應(yīng)助劑作為含有螢石、方解石雜質(zhì)的重晶石粉體酸漂增白的新配方。
2.The antimony ores are mainly composed of such minerals as stibnite, quartz, opal and calcite.
礦石礦物主要為輝銻礦,脈石礦物有石英、蛋白石和方解石等。
3.Thes study and bring forward a new formula for acid bleaching of barite powders containing impurities such as fluorite and calcite.
研究并提出用稀鹽酸、硼酸和反應(yīng)助劑作為含有螢石、方解石雜質(zhì)的重晶石粉體酸漂增白的新配方。
5.Both fractures and vugs may be closed or partially closed by precipitated calcite or other similar material.
裂縫和巖穴被方解石沉淀物或其它類(lèi)似的物質(zhì)完全或部分地封閉。