查询词典 phosphorite

It is a new production method to produce high purity and high concentration phosphoric acid by directly using medium and low grade phosphorite.

窑法磷酸工艺是近年中国自行开发的新工艺，是一种直接利用中低品位磷矿生产高纯度、高浓度磷酸的新的生产方法。

As the phosphate ion , it is abundant and widely distributed, in apatite, phosphorite, and many other minerals.

磷酸盐和磷酸酯数量很多，分布广阔，在磷灰石、磷块岩和很多其它矿物中都存在。

We comparatively investigated the removal of lead ion and cadmium ion in aqueous solution by natural phosphorite and its modified product.

采用天然磷矿石及其改性产品对水溶液中铅离子和镉离子的去除进行了对比研究。

Optimal conditions for crystallizing have been investigated on a laboratory scale pellet reactor initially seeded with phosphorite.

在流化床诱导结晶法除氟研究中，确定了以磷灰石为结晶核的氟化钙结晶过程中的最佳工艺参数。

Additionally, the crystallization of activated phosphorite powder declined, and the surface area increased.

活化磷矿粉结晶度降低，比表面积增大，有利于磷素在土壤中的释放与吸附。

A new technology to produce phosphoric acid from low-grade phosphorite and its advantages are described, also the kinetics of decomposition and crystallization are briefly presented.

摘 要］研究利用低品位磷矿生产磷酸的新流程，分析这一流程的若干特点，探讨流程中的酸解动力学和结晶动力学的一些基础问题。

Kaiyang County is important as one of phosphorite base in our country.

开阳县是我国重要磷矿产区。

The thickness of the metallic layer is in positive correction with the development of phosphorite but in negative correction with the thickness of the stone coal layer.

黑色岩系的底部为厚度不等的磷块岩层，其上为金属层或石煤层，金属层的厚度与磷块岩的发育呈正相关，与石煤层的厚度呈负相关。

It is pointed out that upwelling may be the major mechanism of phosphorite formation, and that direct source of phosphorus is pore water and bottom water in shelf region.

指出上升洋流机制可能为磷块岩形成的主要机制，磷的直接物质来源是陆架区的孔隙水和底水。

Resource of phosphorite is not so optimistic.

磷矿资源状况不容乐观。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。