1) regrinding for lead rough froth
铅粗泡再磨
2) coarse concentrate regrinding
粗精矿再磨
1.
These experiments had be done to the properties of ores,adopt ed the technology of selective flota tion coarse concentrate regrinding and utilizeed BN -Y flotation reagents,obtained f avorable rejection resultt.
本试验在充分研究矿石特性的基础上,采用优先浮选粗精矿再磨的浮选工艺流程,利用BN-Y药剂,获得良好的选别效果。
3) Coarse middlings regrinding
粗粒中矿再磨
4) lead bullion
粗铅
1.
There is a big problem that too much sulphur is wasted in lead bullion pyro-refining process by adding sulphur directly in northwest metallurgy of lead and zinc factory.
针对西北铅锌厂粗铅火法精炼过程中,直接加单质硫进行除铜而出现硫损过大的问题,对除铜工艺中硫的利用方式进行了研究,提出一种除铜新工艺,即利用硫化铅代替单质硫进行除铜。
2.
Nowadays, most factories decopper by adding S directly in refining lead bullion.
目前,在粗铅火法精炼的除铜工艺中,大多数工厂采用加单质硫除铜,其除铜原理是S和Pb反应首先生成PbS,由于S和Cu的亲合力大于S和Pb的亲合力,PbS又和Cu反应生成的Cu_2S,Cu_2S密度比Pb小而形成浮渣,最后通过撇渣得到精铅。
5) crude lead
粗铅
1.
This paper introduces the process, equipments and a production example of pyrometallurgical refining of crude lead, and compares the pyrometallurgical refining with electrolytic refining with respect to the advantage and shortcoming.
介绍了粗铅火法精炼的工艺、设备和生产实例,以及火法精炼与电解精炼工艺优缺点对比。
2.
Flame atomic absorption spectrum(FAAS)analysis for iron in crude lead has been studied,and established the instrument condition of FAAS determination for iron.
介绍了粗铅中铁的火焰原子吸收光谱分析方法,确立了火焰原子吸收分析铁的仪器条件。
3.
All kinds of concerned factors in the production of lead sulfate from crude lead and reducing lead are studied in detail.
研究由粗铅、还原铅生产硫酸铅的各种影响因素,包括氧化温度、传热方式、半成品粒度以及洗涤方法等对产品质量的影响,并找出最佳的生产工艺条件。
6) Classification-regrinding of coarse concentrate
分级-粗粒精矿再磨
补充资料：磨铅策蹇
1.磨钝刀，鞭蹇驴。比喻勉力而为。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条