First, the PAC iron making process - two-step method: this production method is generally a two-step method using acid production process PAC, at atmospheric pressure and a certain temperature, the first step plus higher hydrochloric acid ratio to bauxite powder, the alumina as dissolution, the second step is the first step of the supernatant calcium aluminum powder to react with new entrants. This step both alumina dissolution, but can be adjusted basicity. The first step in the dissolution of alumina can usually above 80%, the second step of the aluminum dissolution rate of 50% or less, so the second paragraph of precipitation slag generally go back to the first step of the reaction. With bauxite and aluminum calcium powder as raw material, the use of acid-soluble two-step process, prepared alumina mass fraction of 10.11%. Basicity of 85% liquid ferric chloride products. Second, the PAC iron making process - acid method: the liquid product obtained PAFC calcium aluminum powder directly with hydrochloric acid to adjust the basicity and cured after completion. The PAC production process is simple, low investment, easy operation, low production cost, but the product of insolubles, high heavy metal content, the solid product is usually not high alumina content. The mass fraction of about 28%, poor product appearance, high iron content. Acid was prepared by PAFC. PAC spray drying and technical indicators! [Features] pressure spray dried spray-type drying PAC is mainly characterized by the pressure atomizer works it decided to make this drying system has its own characteristics. Since pressure spray drying the resultant product is a porous particulate or hollow particulate, using pressure spray dried to obtain a more granular product for the purpose of the resulting granular product with excellent dust and flow properties. Due to a large contact area between the product and water, so good wetting properties than powder products, water purification rate significantly higher than the powdered products, the pressure spray-dried product has a unique characteristic, and therefore by the user's praise. Spray granulation is dried polyaluminum chloride while being atomized into tiny particles, such particles forms a good application performance. Poly aluminum chloride is water soluble substance, has good thermal stability and high solubility, paper mill during the drying process PAC, 40% -50% of poly aluminum chloride solution containing the solid content of the introduction of high pressure coking plant pump PAC, atomized by pressurized into the dryer atomizer dispersed into tiny droplets, droplet granular product was obtained after drying, the drying and granulation simultaneously. The products are mainly used as drinking water, domestic and industrial waste water (such as oily wastewater, printing and dyeing, papermaking wastewater, sewage and other mills) coagulant treatment, as well as highly toxic heavy metals and fluorine-containing waste water treatment; in addition, in the precision casting , leather and so on are also widely used. Bayannaoer PAC, Spirit water, drinking water provided by the Henan Spirit PAC water purification materials Co., Spirit Henan water purification Material Co., Ltd. (www.gyssjs.com) strong, credible, in Zhengzhou, Henan water treatment chemicals and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Spirit into the brilliant water and you work for a better future!