ultra-clean

Research on Principle of Preparation of Ultra-Clean Coal with Selective Oil Agglomeration

选择性聚团法制备超净煤的机理研究

Research On the Preparation of Ultra-clean Coal With Selective Agglomeration

煤的选择性聚团法深度脱灰研究

The actuality , application , preparation and assistant technologies of Ultra-clean and high pure chemical reagents

超净高纯试剂的现状、应用、制备及配套技术

Ultra-fine coal grinding and ultra-clean coal preparation

煤的超细粉碎与超净煤的分选

Research on preparation of ultra-clean anthracite

超低灰无烟煤制备技术研究

A novel process to extract gold by way of coal-gold agglomeration Research On the Preparation of Ultra-clean Coal With Selective Agglomeration

煤油聚团法提金新工艺煤的选择性聚团法深度脱灰研究

The concept of ultra-clean molecular pump unit was proposed by analyzing the index requirements , and comparing some advantages and disadvantages of conventional vacuum unit .

通过分析真空室环境的相关指标要求，比较了几种常规真空获得设备的优缺点，提出洁净分子泵机组的概念。

Discussed is the technology for preparation of ultra-clean coal ( ash ≤ 2.00 % ) by high-precision HM cyclone in two stages at same separation density ;

论述了采用高精度重介质旋流器进行两段等密度分选制备超低灰煤（灰分≤2.00%）的技术；

For low rank coal , hydrophilicity increased after its grinding , ultra-clean coal can not be obtained even ground to more fineness followed by the flocculation-flotation process .

低阶煤经球磨后，表面亲水性增加，即使粉碎粒度很细，用絮团-浮选也无法分选出超净煤。

This paper describes the production history of clean steel , recent methods producing clean steel , production of ultra-clean steel and in addition the suggestion and prospect of production of zero inclusion steel .

介绍了洁净钢的生产历史及近年来所采用的生产方法和超洁净钢的生产，另外还对零夹杂物钢提出了设想与展望。

With such ultra-clean coal as feedstock for production of activated carbon , carbon-addition agent and high-graphite content carbon block as cathode , relatively high economic benefit attained .

以超低灰煤为原料生产活性炭、增碳剂、高石墨阴极炭块等产品可获得较高的经济效益。

Under ultra-clean condition , the Ir concentration in a coastal seawater sample derived from the China Yellow Sea was determined by neutron activation analysis after this preconcentration procedure to be 2.6 × 10 - 14 g / mL.

在超净条件下，采用此流程结合中子活化分析测得黄海近岸海水样品中的铱浓度为2.6×10-14g/mL。

The primary products of GTL plants are diesel oil and naphtha , with the former accounting for 70 % of GTL plants ' total products and whose quality far exceeds the EU 's requirements for ultra-clean diesel oil .

GTL厂的主要产品是柴油和石脑油。柴油约占GTL厂产品的70%，其质量远优于欧盟对超清洁柴油的规格要求。

Ultra-clean coal can be obtained for coal containing less clay minerals and in the contrary , clean coal with less than 2 % ash can hardly be obtained for coal containing more clay minerals finely dissimulated in coal matrix ;

煤中的无机矿物主要是黏土，黏土含量小的煤可以分选出超净煤，反之，黏土和黏土与有机物连生体含量高的煤，很难分选出灰分低于2%的超净煤；

The ultra-clean particles may be classified by the small-diameter hydro-cyclone , According to Liquid-Solid Two-Phase Fluids theory and hydro-cyclone process , a small-diameter adjustable hydro-cyclone is designed , it have got good effect through the practicing .

小直径水力旋流器可以对超细煤粉进行分级，因此应用两相流体理论和旋流器工艺设计原理，设计并制造了小直径可调节型水力旋流器，经过实践证明效果良好。

Entering into the 21st century , world petroleum refining technology is experiencing its great innovation driven by the increasing supply of heavy oils with decreasing quality and the fast increases in the demand for clean and ultra-clean vehicle fuels and petrochemical raw materials .

进入21世纪，世界范围内石油资源的重质化、劣质化程度的加深，对清洁、超清洁车用燃料及化工原料需求的日益增加，正使世界炼油技术经历着重大的调整与变革。

When the coal-based diesel oil alternative the ultra-clean micro-sized coal water slurry combusts in the diesel engine for long time , the clearance of the Plunger Couple often remain a mass of un-combusted Ultra-fine coal particles , and which increasingly leads to the Plunger Couple jam .

柴油机替代燃料-精细水煤浆在柴油机上燃烧一段时间后，供浆泵柱塞偶件间就会积存大量未燃烧的超细煤粉，既而造成柱塞偶件卡死。