Higher anhydrite and hematite content and lower portlandite content would result in lower ash fusion temperature.

一般情況下在线AA亚洲视频，煤灰中氫氧鈣石含量低国产黄色av大片，硬石膏和赤鐵礦含量高的煤，灰熔融溫度較低人人爱人人上人人操台湾。

The content of anhydrite and calcite is lower. The content of anhydrite will increase with the addition of flux CA while the content of calcite will decrease.

煤中添加助熔劑CA后日韩午夜一区二区福利影院，煤灰中硬石膏含量增加，并且隨著助熔劑CA量的不斷增加人人人人看人人人人操，方解石含量在不斷減少国产成人高清亚洲影院在线观看，硬石膏含量在不斷增加。

ZM Series exploding isolation protable cola eletrical drill used for mining is applicable to coal mine where has explosive gas and coal dust,used to drill holes in half-hard and hard coal bed when digging .

ZM系列礦用隔爆領(lǐng)手持式煤電鉆適用于具有鎂塵爆炸性氣體混合物的煤礦井下强制高潮18XXXX按摩免费视频，在采掘工作面對(duì)中硬和硬煤層鉆眼之用十八禁免费A片AV毛片无码网站。

In order to overcome some difficulties in mechanized kaolin mining, such as the weak roof, hard ore body, high toughness, it is necessary to apply long hole standing shot technology before the mining activity so as to improve the mechanical cutting efficiency and meet the demand of blocks degree.

為了解決煤系高嶺土礦機(jī)械化開采存在頂板軟弱，礦體相對(duì)煤炭質(zhì)地硬18禁成年无码免费网站无遮，韌性大精品国自产在线观看，礦石塊度要求適中等難題，有必要在開采前采用預(yù)先對(duì)礦體進(jìn)行充分合理的松動(dòng)爆破岛国一级高潮av黄片，以提高機(jī)械切割效率及滿足礦石塊度適中的要求欧美午夜免费福利。

Affected by the backfilling, the tangential stress of shotcrete has a tendency is for pressure stress to be tensile stress; it is dangerous to induce the axial cranny.

對(duì)照現(xiàn)場(chǎng)實(shí)際，在近水平煤系地層中修建隧道欧美久久迷奸网站视频最新，如有厚層硬巖層控制国产日韩Av无码毛片尤物，只要對(duì)局部軟巖層加強(qiáng)支護(hù)控制，是可以保證圍巖的整體穩(wěn)定的午夜国产三级。

The theory of top coal fracture control and the drawing manner adaptation to top coal block distribution is used at work face with"two hard conditions", and the top coal recovery ratio has distinct improvement.

以上頂煤控制壓裂及放煤理論在&兩硬&綜放采場(chǎng)的應(yīng)用看黄名站在线，提高頂煤回收率的效果明顯。

Coal is a hard black material; wheat is the stuff they use to make bread.

煤是一種硬的黑色原料国产乱伦视频网址。

Early production of activated carbon materials for the timber, hard shell or animal bones, and later the main use of coal, by dry distillation, activated carbon after activation production methods are:① steam, gas activation.

早期生產(chǎn)活性炭的原料為木材一区二区福利导航在线、硬果殼或獸骨，后來主要采用煤五月婷网址，經(jīng)干餾91网站免费看国产、活化處理后得到活性碳生產(chǎn)方法有：①蒸汽、氣體活化法在线播放免费人成试看。