ceramic mugs double wall Coal is good or bad should be how to judge?

ceramic mugs double wall

Judgment coal is good or bad, mainly from the value in use and convenience of operation in these two areas to consider. Specifically, good coal should comply with the requirements of the "large, small, high, low," five words.

, Calorific larger.

Small, that is, the ash content to be small. Coal ash content, volatile and fixed carbon, relatively speaking, more heat will inevitably. Such coal, kiln temperature rise easily, and fewer the evil gray and dig the number of gray.

High, that is, the ash melting point. Only in this way so as not to be too serious slagging. Low melting point, and serious slagging, will bring the following four points of the harmful effects of: (1) affect ventilation; (2) refractory and grate the loss accelerated; (3) residue clearance time is long, caused by temperature fluctuations, also affect the atmosphere of the kiln;(4) the cleaning residue very hard slagging too much, greatly increasing the labor intensity of the kiln workers.

Low ignition point lower. Coal of low ignition point, to burn quickly added to the fire box, and are not easily extinguished. If the ignition point, coal is added to the fire box, burning more difficult, and once the operation careless, furnace temperature drops, coal added, also extinguished possible.

That reserves more convenient and timely supply, low prices, coal is also relatively stable.