石膏粉又叫膩?zhàn)臃郏饕脕砥鰤w，勾縫，墻面找平等;建材方面可做石膏水泥;食品方面可以做酵母激活劑，被稱為“食品添加劑硫酸鈣”。還可以作為醫(yī)用食品添加劑、硫酸生產(chǎn)、油漆填料等等材料。石膏粉一般在我們裝修中是作為處理墻面的基層，填平我們的墻面的材料，石膏粉是一種廣泛應(yīng)用于建筑、建材和石膏水泥的材料。濟(jì)南石膏粉生產(chǎn)工藝咋樣呢？

Gypsum powder, also known as putty powder, is mainly used for building walls, pointing and wall leveling; Gypsum cement can be used for building materials; In food, it can be used as yeast activator, known as "food additive calcium sulfate". It can also be used as medical food additives, sulfuric acid production, paint fillers and other materials. Gypsum powder is generally used in our decoration as the base layer for wall treatment and the material for filling our walls. Gypsum powder is a material widely used in construction, building materials and gypsum cement. What is the production process of gypsum powder in Jinan?

(1)煅燒塊石膏，然后再粉碎。

(1) Calcined gypsum block and then crushed.

這種方法先將塊石膏置于土窯、室窯或立窯中進(jìn)行煅燒，然后在輪碾機(jī)或球磨機(jī)等粉碎設(shè)備中粉碎和篩分，便得到所需粒度的熟石膏粉。這種方法的優(yōu)點(diǎn)是設(shè)備簡單，燒后的塊石膏粉碎效率高。缺點(diǎn)是石膏煅燒不均勻，容易造成局部死燒和生燒現(xiàn)象，同時(shí)也容易混入煤灰等雜質(zhì)。

In this method, the block gypsum is first calcined in the earth kiln, chamber kiln or shaft kiln, and then crushed and screened in the grinding equipment such as wheel mill or ball mill to obtain the gypsum powder with the required size. This method has the advantages of simple equipment and high crushing efficiency of burnt gypsum block. The disadvantage is that the gypsum calcination is uneven, which is easy to cause local dead burning and raw burning, and it is also easy to mix with impurities such as coal ash.

(2)煅燒已粉碎的石膏粉。

(2) Calcination of crushed gypsum powder.

這種方法是把生石膏先破碎并在輪碾機(jī)或鼠籠式粉碎機(jī)內(nèi)粉碎，然后送到炒膏鍋或回轉(zhuǎn)窯內(nèi)煅燒，燒后再進(jìn)行篩分使用。這種方法優(yōu)點(diǎn)是粉磨過的顆粒燒得比較完全，質(zhì)量較高，缺點(diǎn)是生石膏的水分大，粉碎效率低，炒石膏時(shí)攪拌不易均勻。

This method is to crush raw gypsum first and crush it in a wheel mill or squirrel-cage crusher, then send it to a frying pan or rotary kiln for calcination, and then screen it for use. The advantages of this method are that the milled particles are completely burnt and of high quality. The disadvantages are that the raw gypsum has high moisture content, low crushing efficiency, and it is not easy to stir evenly when frying the gypsum.

(3)生石膏的粉磨和煅燒同時(shí)進(jìn)行。

(3) The grinding and calcination of raw gypsum are carried out at the same time.

這種方法把粗碎的塊石膏送入風(fēng)掃式快轉(zhuǎn)粉磨機(jī)中粉碎，懸浮狀態(tài)的石膏粉在熱氣燒管中呈懸浮狀態(tài)煅燒，再經(jīng)風(fēng)力選粉而制得所需石膏粉。這種方法的優(yōu)點(diǎn)是產(chǎn)量大，炒膏效率高，所得快速炒制的熟石膏凝結(jié)快，強(qiáng)度低，但設(shè)備復(fù)雜。

In this method, the coarse gypsum blocks are sent to the air-swept quick-rotating powder mill for crushing, and the suspended gypsum powder is calcined in a suspended state in the hot gas burning tube, and then the required gypsum powder is prepared by wind power separation. The advantages of this method are large output, high efficiency of frying plaster, quick setting and low strength of the obtained quick-fried plaster, but the equipment is complex.

(4)先將石膏粉碎成細(xì)顆粒砂狀，然后炒制，炒制以后再進(jìn)行粉碎和篩分。

(4) First, the gypsum is crushed into fine sand, then fried, and then crushed and screened.

用一般鼠籠式粉碎機(jī)粉碎，風(fēng)選篩分。這種方法的優(yōu)點(diǎn)是具有前面兩種方法的優(yōu)點(diǎn)，但工藝過程較為復(fù)雜。這種方法在國內(nèi)陶瓷行業(yè)中仍應(yīng)用較廣。

Crush with a general squirrel-cage pulverizer, and conduct air separation and screening. The advantage of this method is that it has the advantages of the previous two methods, but the process is relatively complex. This method is still widely used in domestic ceramic industry.

(5)壓蒸法炒膏。

(5) Stir-fry paste by autoclaving.

這種方法先把粗碎后塊度為25——50mm的生石膏先在60℃的熱氣中預(yù)熱，然后放在壓力鍋內(nèi)以1，3大氣壓飽和過熱蒸氣(125℃)密閉蒸煮5——7小時(shí)，然后再通入200℃的熱干氣，直至排出的是熱干氣為止，得蒸氣壓半水石膏。這種半水石膏呈a晶型，用這種半水石膏翻的模型的強(qiáng)度非常高，但這種炒制方法設(shè)備較復(fù)雜。

In this method, the raw gypsum with the size of 25-50mm after coarse crushing is preheated in the hot air of 60 ℃, then placed in a pressure cooker and steamed for 5-7 hours with saturated superheated steam (125 ℃) at 1, 3 atmospheric pressure, and then injected with hot dry gas at 200 ℃ until the hot dry gas is discharged, and the vapor pressure hemihydrate gypsum is obtained. This kind of hemihydrate gypsum is in the form of a crystal. The strength of the model turned by this kind of hemihydrate gypsum is very high, but the equipment of this method is complex.

概括來說，石膏粉生產(chǎn)工藝主要有以上這5種，不論何種方法，熟石膏粉的細(xì)度一般都要求80——120目篩的余量不超過0.5%。更多相關(guān)產(chǎn)品使用事項(xiàng)就來聯(lián)系我們http://www.sjzmx.cn咨詢了解吧！

Generally speaking, there are five main gypsum powder production processes. Regardless of the method, the fineness of gypsum powder generally requires that the margin of 80-120 mesh sieve should not exceed 0.5%. Contact us for more information about the use of products http://www.sjzmx.cn Ask about it!