煤

The paper describes searching for reduction coal blending process for zinc vertical retorting ,proposes a new concept of the reduction coal blending technology,i.

对竖罐炼锌用还原煤的配煤方法进行了探索，提出了竖罐炼锌用还原煤配煤技术的新思路。

The major reaction product of coal in the arc plasma reaction is acetylene and CO. The acetylene is come from the saturates and aromatics in the coal.

2煤在电弧等离子体中反应的主要的产物是乙炔和一氧化碳，乙炔的来源主要是煤中的饱和分和芳香分。

To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted.

为提高炮采面块煤率，提出了松动预裂微差爆破的落煤方案，并对布孔参数和爆破参数进行了调整。

The results show that stable organic sulfur is the main s9lfur form in ZY coal. Pyrite can be removed under all the atmospheres in the tests, except for nitrogen at 500℃ 1% O2-N2 atmosphere has strong reactivity to remove the stable organic sulfur in ZY coal, especially at 700℃. Under 1% O2-N2 atmosphere, not only a part of stable organic sulfurs can be decomposed, but also more stable organic sulfur-containing structure can be broken down into less stable one.

结果表明，对于ZY煤而言，黄铁矿和不稳定有机硫除在氮气气氛下500℃时热解不能全部分解外，在其他条件下热解时都可以分解。1%氧气对ZY煤中稳定的有机硫的分解有很强的促进作用，不仅可以脱除稳定的有机硫，还可以使更稳定的有机硫断裂生成次稳定的有机硫，在随后的AP-TPR-MS实验过程中，这部分硫在较低的温度下逸出。

Studies the distribution regular of sulphuring in course of 8~# coal flotation in Xiqu preparation plant,to provide test data for 8#coal flotation concentrate desulphuring.

针对西曲选煤厂8~#煤浮选过程中硫的分布规律进行试验研究，为8~#煤浮精脱硫提供试验数据。

Based on the characteristics of faulty coal,the process and operation are adjusted and drawn up to suit its properties,viz.,to decrease appropriately the intensity of blowing,readjust the quantity of steam used,prevent the coal bed from blown upside down,dented,tunnelled or lumped,and readjust the upward and downward blowing of nitrogen and air in quantity,with the result that experiences ar...

根据劣质煤的特性调整和制定了适合其性质的工艺和操作，即适当减小吹风强度，调整蒸汽用量，防止出现炭层被吹翻、吹凹、吹出风洞及结块，调节上、下吹加氮空气量等。劣质煤的应用，降低了成本，提高了企业的竞争力。

On this basis deduced in this paper is a similitude criterion, featuring the flow state of the above-cited coal-water mixture in pipes.

由于所输送高固体浓度的煤水混合物常表现为复杂的非牛顿流体的性质且其管内流动存在滑移现象的特性，因此要完全从理论上去计算煤水混合物的管内阻力是困难的［1］。

In order to improve the operation of BF,both burden material benefication and operation were optimized.The new sintering and pelleting technology,optimized burden structure and new coking technology are used and hearth activity,gas stream distribution have been improved for smooth operation.

为提高白云鄂博特殊矿高炉强化冶炼技术水平，在高炉精料和操作技术两大方面进行了优化，前者包括烧结和球团新技术应用、高炉含铁炉料结构优化、炼焦配煤优化；后者涵盖提高炉缸活跃性、改善煤气流分布及顺行状况等措施。

Secondly, this paper puts forward the basic consideration about terminal simulation by inducting time parameter to coal terminal model on the base of Petri Net theory.

其次，以Petri网理论为基础，建立了散货煤码头工艺系统的理论模型，并在此基础上进一步分析了散货煤码头的动态特性。

The theory of staic permeation diffusion combustion is presented in the fuel bed firing of bio coal .

提出生物质型煤层燃方式的静态渗透式扩散燃烧机理，通过试验得出生物质型煤燃烧速度影响因素的规律性，为生物质型煤燃烧控制技术、工业锅炉设计提供有价值的依据。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。