无烟煤介绍
无烟煤，俗称白煤或红煤。是煤化程度最大的煤。无烟煤固定碳含量高，挥发分产率低，密度大，硬度大，燃点高，燃烧时不冒烟。黑色坚硬，有金属光泽。以脂摩擦不致染污，断口成贝壳状，燃烧时火焰短而少烟。不结焦。一般含碳量在90%以上，挥发物在10%以下。无胶质层厚度。热值约6000-6500千卡/公斤。有时把挥发物含量特大的称做半无烟煤；特小的称做高无烟煤。
与使用烟煤相比，由于无烟煤挥发份较低，因此需要一个相对较大的分解炉，以期获得相同的生料分解率和相同的煤粉燃烬程度，或者要求一个较高的操作温度，或者将无烟煤磨得更细一些。
一般鉴定型煤冷、热机械强度的方法有三种:
①抗压强度指无烟煤定的强度称为冷抗压度；将无烟煤在高温下加热一段时间后，再进行测定，即为热抗压强度。具有较高的热抗压强度，才能使无烟煤在燃烧过程中维持形状燃烧而不散。
②跌落强度如前所述，在使用无烟煤过程中，无烟煤要经多次跌落。所以也要求无烟煤具有一定的抗冲击能力。无烟煤的跌落强度是鉴定抗冲击能力的质量指标之一。煤球(5kg)从一定高度(1．3～1．5m)同时自由落下至一定厚度的(15mm)钢板上，这样反复落下三次，最后以大于13mm的粒度的质量百分率表示落下强度的指标。一般认为，这个指标大于85％为好。
③耐磨强度无烟煤的耐磨强度，对于炼铁、钙镁磷肥生产以及制合成氨原料气使用的煤球来说都很重要，它也是检测型煤内部粉煤颗粒互相结合的牢固程度的方法之一。无烟煤可以在冷态下进行耐磨试验，也可以在热态下进行。测定热态下的耐磨强度更能接近使用时的实际情况。显然无烟煤耐磨强度愈高，在炉内燃烧、气化时就愈不容易粉化和增加带出物。总之，抗压强度、跌落强度和耐磨强度是判断型煤冷、热机械强度的三项主要指标。
新型干法水泥生产线装备有现代化的燃烧器，现代化的燃烧器配备有适当的火焰调节装置，可以使无烟煤没有任何问题地在窑头进行燃烧。燃烧器的作用不仅仅是输送和分布煤粉，更主要的是保持火焰的理想长度和合适的气体流场。火焰的长度对于新型干法窑来讲十分重要，火焰如果过短，煤的潜热只能在较小体积内释放出来，火焰的温度就会在局部变得很高，相反，如果火焰长度加长，温度就会下降。火焰的长度主要靠燃烧器的推动力进行控制。
无烟煤用途
无烟煤块煤主要应用是化肥（氮肥、合成氨）、陶瓷、制造锻造等行业；无烟粉煤主要应用在冶金行业用于高炉喷吹（高炉喷吹煤主要包括无烟煤、贫煤、瘦煤和气煤）。
联系方式：宁夏碧源活性炭有限公司
联系人：王亚莉
电话：15769520509
QQ：3117833832
Email:3117833832@qq.com
地址：宁夏平罗县太沙工业园区
产品图片
联系方式
宁夏碧源活性炭有限公司
联系人：王亚莉
电话：15769520509
QQ：3117833832
Email:3117833832@qq.com
地址：宁夏平罗县太沙工业园区
厂家图片
英文介绍
Anthracite, commonly known as coal or anthracite. Is the largest degree of coalification of coal. The carbon content of high volatile anthracite, low yield, high density, high hardness, high ignition point, do not smoke during burning. Black hard, metallic luster. The friction caused by grease stain, fracture into a shell, burning short flame and smoke less. Noncoking. The average carbon content of 90% or more, volatile in 10%. No gum layer thickness. Calorific value of about 6000-6500 kcal / kg. Sometimes the content of volatile matter is called semi Anthracite; especially the low called high anthracite.
Compared with the use of bituminous coal, due to the anthracite volatile low. Therefore, it is necessary a relatively large decomposing furnace, in order to obtain the same raw material decomposition rate and the same coal burnout degree, or require a higher operating temperature, or will be some of the finer anthracite coal mill.
There are three methods of identification of general mechanical strength, thermal coal cold:
The compressive strength of the strength of the anthracite coal is called cold compression strength; the anthracite is heated at high temperature for a period of time, and then measured, that is, the thermal compressive strength. With the high thermal compressive strength, it can be made to maintain the shape of the anthracite in the combustion process.
In the process of using anthracite, anthracite should be dropped by many times as before. So it is also required to have a certain impact on the anthracite coal. The drop strength of anthracite is one of the quality indexes for the identification of anti impact ability. Briquettes (5kg) from a certain height (1.3 ~ 1.5 m) and free fall to a certain thickness (mm) steel plate, such repeated falls three times, finally to greater than the mass percentage of the granularity of 13mm said fall intensity index. It is generally believed that this indicator is better than 85%.
The abrasion resistance of anthracite abrasion strength, for the use of iron, calcium magnesium phosphate fertilizer production and synthesis ammonia raw gas briquettes are very important, it is the detection of briquette internal pulverized coal particles to each other with a strong degree of one. The anthracite can be used in the cold state to carry out the wear test, and can be carried out in the hot state. Determination of the wear resistance of the thermal state is more close to the actual conditions of use. The higher the strength of the anthracite is, the more difficult it is to burn and gasification in the furnace. In short, the compressive strength and abrasion resistance, drop strength is to determine the three main indexes of cold heat, the mechanical strength of briquette.
The new dry process cement production line is equipped with modern burner, and the modern burner is equipped with an appropriate flame adjusting device, which can make the anthracite burning without any problems. The role of the burner is not only the transport and distribution of pulverized coal, but the main is to maintain the ideal length of the flame and the appropriate gas flow field. The length of the flame is very important for the new dry process kiln. If the fire is too short, the latent heat of the coal can be released in a small volume, the temperature of the flame will be high, in contrast, the temperature will be reduced if the flame length is lengthened. The length of the flame is mainly controlled by the driving force of the burner.
Smoke-free lump coal is the main application of chemical fertilizer (nitrogen, ammonia), ceramics, the manufacturing of forging industry; Anthracite pulverized coal is mainly used in the metallurgical industry for blast furnace injection blow (BF Pulverized Coal mainly includes anthracite, lean coal, lean coal and gas coal).
厂家资质
联系方式
宁夏碧源活性炭有限公司
联系人：王亚莉
电话：15769520509
QQ：3117833832
Email:3117833832@qq.com
地址：宁夏平罗县太沙工业园区