Henan Zhengzhou Mining Machinery CO.Ltd
Henan Zhengzhou Mining Machinery CO.Ltd Being genuine; Service taking top priority; Delivery and paying in time.
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We have complete set of process technology and core equipment R & D and manufacturing technology, and committed to the R & D and application of new technologies in the field of gypsum building materials.
Introduction
Gypsum is a monoclinic mineral and a hydrate whose main chemical component is calcium sulfate (CaSO4). Gypsum is a widely used industrial material and building material. It can be used as cement retarder, building products, model making, medical food additives, sulfuric acid production, paper filler, paint filler, etc. The most widely used natural gypsum is dihydrate gypsum. Its active ingredient is calcium sulfate dihydrate (CaSO4·2H2O). Generally, gypsum is graded according to the content of calcium sulfate dihydrate in the ore. High-grade gypsum is mostly used as raw material for the production of special gypsum products, such as food, medical, artwork, models and chemical fillers; gypsum mines with calcium sulfate dihydrate content of less than 60% are rarely used; more than 60% The gypsum ore, depending on its content, is used in various fields such as building materials and construction.
Dihydrate gypsum (CaSO4·2H2O) is also known as raw gypsum. After calcination and grinding, β-type hemihydrate gypsum (2CaSO4·H2O) can be obtained, namely, building gypsum, also known as plaster of paris and plaster. If the calcination temperature is 190℃, model gypsum can be obtained, and its fineness and whiteness are higher than building gypsum. If the green gypsum is calcined at 400-500°C or higher than 800°C, floor gypsum is obtained. The setting and hardening are slower, but the strength, wear resistance and water resistance after hardening are better than ordinary building gypsum.
Advantages
According to the product use, by adjusting the rotary kiln speed and steam consumption, the initial setting time of gypsum powder can be adjusted and controlled.
1. The gypsum rotary kiln pipeline contains high-pressure steam, adopts low-temperature and slow-speed heat exchange, has a large heat exchange area, and the temperature of the heat exchange medium is more constant, and the calcination process is easier to control.
2. The gypsum rotary kiln has large volume, large processing capacity, more sufficient drying and calcination, and more stable products.
3. The one-step method simplifies the process, and the drying and calcination are continuously completed in the same equipment, and the control is simple, and the supporting equipment and control links are reduced.
Technology
The industrial by-product gypsum is fed into the steam tube bundle calcining kiln through box feeder, belt conveyor, vibrating feeder and other conveying equipment, and then calcined under 240 ℃ supersaturated steam; The calcined products are sent to the cooling bin for cooling through conveying equipment such as screw conveyor and plate chain elevator; The cooled semi-finished products are sent to the ex-grinding bin through screw conveyor, belt conveyor, plate chain elevator and other conveying equipment, and then sent to the ball mill for grinding after metering; The milled finished products are sent to the finished product warehouse for storage; After the finished product warehouse, a packaging machine can be set for packaging and sale, or the powder material can be directly transported by bulk truck to customers.
Parameter
| Capacity(wt) | 5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 |
| Main Equipment | Main equipment models, and technical & economic index | |||||||
| Rotary Kiln | Ø2.0×24m | Ø2.4×24m | Ø2.8×26m | Ø3.0×26m | Ø3.2×26m | Ø3.4×28m | Ø3.6×28m | Ø4.0×28m |
| Plaster Mill | Ø1.2×4.5m | Ø1.5×5.7m | Ø1.83×5.5m | Ø2.1×6.5m | Ø2.2×6.5m | Ø2.4×7m | Ø2.4×8m | Ø2.6×8m |
| Bag Filter | PPC96-6 | PPC96-8 | PPC128-6 | PPC128-9 | PPC96-2x9 | PPC128-2x7 | PPC128-2x9 | PPC128-2x12 |
| Production Raw Material Requirements | calcium sulfate dihydrate content (dry basis) ≥90%, adhesion water content≤15%, water-soIubIe magnesium oxide (dry basis)≤0.5% PH vaIue 6-8 , chIoride ion content (dry basis)≤500mg/kg | |||||||
| CaIcination Temperature/"C | 150 | |||||||
| Energy Consumption lndex/(kg/t lime) | 500±50 | |||||||
| Power Consumption lndex/(kw•h/t lime) | 25±5 | |||||||
| Desulfurization Gypsum: Gypsum Powder | 1.4:1 | |||||||
| Setting Time | Initial solidification≥8min, termination of solidification≤30min | |||||||
| Fineness | ≤5% | |||||||
| Strength (Mpa) | 2 hours flexural strength≥3.0M Pa; compressive strength≥6.5MPa; | |||||||
| Three-phase Control | Dihydrate gypsum is less than 3%, hemihydrate gypsum is greater than 84%, and soluble anhydrous gypsum is less than 3%; | |||||||
| mission Concentration / (mg/m3) | ≤30 | |||||||
| Annual Working Day / days | ≥300 | |||||||
| Overhaul Cycle/Year | 3 | |||||||
| Applicable Fuel | Steam, natural gas, pulverized coal | |||||||
Note:this configuration table is for reference only and varies according to customer requirements
1.The advice of model choice.
2.Design and manufacture machines according to customer's special requirements.
3.The company is free of charge to the user on-site engineering and technical personnel planning site for the user to design the best processes and program.
4.Arrange technicians to go to the site to guide installation.
Global clients
Our process system and equipment products are sold well in all provinces and regions in China, and has been exported to Russia, South Korea, the United States, Canada, Japan, Britain, Saudi Arabia, Vietnam, Thailand, Indonesia, Malaysia, Nepal, Bangladesh, Mexico, Kazakhstan, Turkey, Iran, Guatemala, India, Mongolia, Africa, South America and many other countries and regions, which have been well received by our clients.
Henan Zhengzhou Mining Machinery Co., Ltd (hereinafter referred to as “Henan ZK Corp”)., founded in 1956, is a designated production unit of building materials and mining machinery designated by the National Ministry of Machinery Industry and Henan Provincial Department of Machinery and Electronics Industry. After more than 60 years of development, our company has gradually developed from a single mechanical equipment manufacturing enterprise into a comprehensive company with strong ability of the whole system researching and designing on process technology and equipment manufacturing in the fields of building materials, mining, metallurgy, environmental protection etc.
Q1: Are you factory or trade company?
A1: We are factory with CE .
Q2: Where your products have been exported before?
A2: Our products have been sold to Eastern Europe,Asia, Africa, South America, middle East and so on.
Q3: How will you help the customer to install the equipment?
A3: Our senior engineer will guide the installation and commissioning as well as the initial production at.
Q4: How about the wear parts supply?
A4: We offer wear parts to our customer with our most favorable price.
Q5: What about after-sale service?
A5:12 months warranty for all kinds of products.
Q6: How to get the free solution and quotation ?
A6: Please send inquiry to us ,leave your whatsapp and email , our sales manager will contact you within 1 hours .