高温燃烧使得炭灰(富含硅和铝)和硫化钙熔为一体，从而产生固体残渣，从锅炉底部溢出。
The high combustion temperatures melt together the coal ash (largely silica and alumna) and calcium sulfide solids to form an inert slag that drains from the bottom of the boiler.
依据铸铝坩埚的服役条件，制造工艺和成本要求，选择中硅耐热球铁取代普通灰口铸铁制造铸铝坩埚。
Medium silicon heat-resisting nodular cast iron has been chosen instead of common grey iron to make cast aluminium crucible according to the work condition. making process and cost of the crucible.
应用推荐