The gypsum calcination method belongs to the technical field of calcined gypsum, which is characterized by plaster powder as binder and particle size below 0.2mm pulverized coal and water mixing into sticky coal paste, the particle size of 5 ~ 10mm gypsum stone coal paste mixing into small pellets, the gypsum small grains sticky on the surface covered with a layer of coal clothes, then pour into dry mixed powder in gypsum powder with particle size below 0.2mm pulverized coal rolling the adhesive is coated with a layer of coal coat, then gypsum adhered to small grains on the clothes drying coal or solidified directly into the kiln calcined with natural or artificial way, the invention is as follows advantages: 1. can save more than 20% of the coal production increased by more than 25%; 2.; 3. the quality of the products is increased by more than 20%; 4. excellent inferior coal is applicable; 5. for other non kiln kiln body shape Such as rotary kiln, tunnel kiln, etc., 6. can be calcined industrial waste to make gypsum.
【技术实现步骤摘要】
本专利技术属于石膏煅烧
技术介绍
中国专利申请号991229010,公开了《利用立窑煅烧超活性石膏的生产方法》,该生产方法在实践中存在择煤性强、石膏矿石粒与煤粒搅拌不匀而造成的欠烧和过烧现象,产品质量不稳定。
技术实现思路
本专利技术针对上述缺点提供新的石膏煅烧法。石膏煅烧法是这样实现的用熟石膏粉作粘结剂并加粒径0.2mm以下煤粉和水调拌成具有粘性的煤糊状,把粒径5~10mm石膏矿石小粒料放入煤糊内搅拌,使石膏矿石小粒料颗粒外面润湿并粘覆一层湿煤衣,所形成石膏矿石粘覆式小粒料,又倒入熟石膏粉与粒径0.2mm以下煤粉混合的干燥粉体内滚动,使其再粘覆一层煤衣,然后用人工或自然的方式将石膏矿石粘覆式小粒料颗粒上的煤衣干燥或凝固后直接投入窑内煅烧。本专利技术具有下列优点1、节能20%以上;2、产量提高15%以上;3、质量提高20%以上;4、能适宜立窑或非立窑形的其它窑体如回转窑、隧道窑等;5、操作简单运行成本低;6、可将工业废渣如磷石膏、氟石膏、火电厂脱硫灰膏等煅烧成石膏。具体实施例方式下面将结合非限定性实施例作进一步说明 用通常的碎石机将石膏矿石块料破碎成粒 ...
【技术保护点】
一种石膏煅烧法,其特征是:用熟石膏粉作粘结剂并加粒径为0.2mm以下的煤粉和水调拌成具有粘性的煤糊状,把粒径5-10mm石膏矿石小粒料放入煤糊内搅拌,使石膏矿石小粒料颗粒外面润湿并粘覆一层湿煤衣,所形成石膏矿石粘覆式小粒料,又倒入熟石膏粉与粒径为0.2mm以下的煤粉混合的干燥粉体内滚动,使其再粘覆一层煤衣,然后用人工或自然的方式将石膏矿石粘覆式小粒料颗粒上的煤衣干燥或凝固后直接投入窑内煅烧。
【技术特征摘要】
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