Air-swept coal Mill is the main equipment of cement plant and used for drying and grinding raw materials or coal pulverized.It is made up of the feed device, main bearing, rotary part,driving device,discharge device, high pressure starting device and lubricating system.
The coal mill features ratiures rational structure and high grinding efficieney, It is an ideal equipment for raw materials or pulverized coal preparation.
1.Applicable to dry closed-circuit milling only ;
2.Operates with an airflow passing through the mill providing elementary pre-classification ;
3.Capable of producing top product sizes of the order of 50 microns or finer;
4.Typically produces a narrow particle distribution with relatively high D50 values;
5.Enables limited drying of material to be accommodate.
Lipu Heavy Industry Machinery Co., Ltd
No.3000,Longdong Road,Pudong District,Shanghai
Zhongke’s Cement production line.
Cement production line process is as follows:
1. Crushing and pre-homogenization:
(1) broken cement production process, most of the material to be broken, such as limestone, clay, iron ore and coal. Limestone is the largest amount of raw materials, cement production, mining the particle size after the large, high hardness, so the broken limestone crushing the material in the cement plant occupies a more important position.
(2) raw materials are pre-averaging technique is pre-existence of raw materials, take the process of applying scientific stacker technology, the initial raw materials are of the raw material yard with storage and are of the same features.
2. Raw material preparation:
Cement production process, to produce 1 ton of Portland cement grinding at least 3 tons of materials (including raw materials, fuel, clinker, mixed materials, gypsum), according to statistics, the dry-process cement production line grinding operations need to consume Power accounts for about 60% of the whole plant over power, of which 30% of raw material grinding more than about 3% of total coal mill, cement grinding about 40%. Therefore, a reasonable choice grinding equipment and processes, optimize the process parameters, proper operation, control operation system for ensuring product quality, reduce energy consumption is of great significance.
3. Raw materials are: the
Dry cement production process, raw material composition is stable pit entry clinker thermal system stability the prerequisite, the system plays a raw meal of raw ingredients stability of pit entry last gatekeepers.
4. Preheating decomposition:
Preheating the raw material and parts to complete decomposition of the pre-heater, replace the rotary part of the function, to shorten the length back to the kiln, while the accumulation of the state of the kiln to heat the process gas feed, move to the inner suspension preheater , which will give the raw material can be discharged with the kiln hot gas mixing, increasing the material contact area of gas, heat, fast heat exchange efficiency, to improve the kiln system productivity, reduce heat consumption of clinker purposes.
(1) the material dispersion
80% of heat pipes carried out at the entrance. In the preheater tube feeding raw material, increased airflow with high-speed impact, the material turned off with the flow on the movement, while being dispersed.
(2) gas-solid separation
When carrying material powder into the air after the cyclone, cyclone cylinder and forced to the inner cylinder (exhaust pipe) to do within the annular space between the rotating flow, and the side of the rotating side of the downward movement from the cylinder to the cone, has been able to extend to the end of the cone, and then turned up on the rotation, the exhaust pipe.
Decomposition technique is the emergence of pre-calcination process of cement a technology leap. It is added between the preheater and rotary kiln calciner and the increased use of flue, set the fuel injected into the device so that the exothermic fuel combustion process and raw materials endothermic decomposition of carbonate, in the calciner or suspended within the flow of state quickly, so that the decomposition into the kiln feed rate to 90%. Within the original carbonate in the decomposition of rotary task, move the calciner; fuel from the calciner to join the majority, joined a small part of the kiln, the kiln burning zone to reduce heat load, extended liner life, is conducive to large-scale production; the mixed fuel and raw materials, timely delivery of fuel combustion heat to the material, the combustion, heat transfer and carbonate decomposition process can be optimized. Thus has a high quality, high efficiency, low consumption and a series of excellent performance and features.
5. Clinker burning:
Raw material for completion in the cyclone preheater preheating and pre-decomposition, the next process is carried out into the rotary kiln clinker.
In the rotary kiln for further rapid decomposition of carbonate and a series of solid-phase reaction of the cement clinker and other minerals. With the temperature near the material, the other minerals will become liquid, dissolved in the liquid phase and the reaction generates a large number (clinker). Clinker, the temperature started to fall. Finally, the cement clinker cooler to clinker kiln cooling of high temperature discharged to the downstream transport, store and cement mill can withstand the temperature, while high-temperature clinker sensible heat recovery, improve thermal efficiency and clinker quality.
6. Cement grinding:
Cement manufacturing cement grinding is the final process, but also power most of the process. Its main function is to cement clinker (and gelling agent, performance tuning materials, etc.) grinding to the appropriate size (in fineness, specific surface area, said), a certain particle size distribution, increasing the size of its hydration accelerate the hydration rate of cement paste to meet the coagulation, hardening requirements.
7. Cement packaging:
Bagged and bulk cement factory has shipped both ways.
Zhongke Engineering Technology Co.,Ltd
Henan ICP prepared No. 09028661
TEL: 86-371-68166682 86-371-668166682
FAX: 86-371-68166682 Post: 450000
Address:West Huagong Road,
Zhengzhou City,Henan Province,China
Production Line For Cement (2011 hot sale)
1) many daily capacity for choosing
2) high production ratio
3) low consumption power
4) ISO SGS
During cement production, most of the raw materials need to be pre-crushed, thus providing more convenience for the following cement production processes, like pre-homogenization, storing, dosing, grinding, drying and material conveying, etc.
While choosing crushing equipment, we need to take many factors into consideration, for example, material properties and material granulation. Thus we are able to choose an optimum machine.
Our company has many years experience in manufacturing pre-crushing equipment. Limestone crusher is one of our most popular pre-crushing equipment. Till now, our limestone crushers have been successfully used in many cement production lines. Staffed with experienced engineers, we are able to produce a complete set of pre-crushing equipment upon customers requirements. Additionally, we can also supply complete services, from the design of pre-crushing equipment, through custom manufacturing, to equipment installation. Machinery testing and operator training are also provided.
A crusher is a primary component of pre-crushing equipment. Its crushing chamber is able to receive and crushing block materials, but not compact materials. Thus pre-crushing equipment will not overload.
1. In calibration area, each block-material will be extruded, so as to obtain materials with required size. Its large processing capability and free passing of materials during extrusion interval times greatly improve working efficiency.
2. Due to its rational design, our pre-crushing equipment can ensure the smallest power consumption and lining plate wearing, under the condition that material granulation and processing amount is given.
3. Our pre-crushing equipment is designed with a spring safety system to provide overload protection, and this system is maintenance free.
The spring safety system consists of a support ring, an adjusting ring and several rows of coil springs. When uncrushed materials fall into the crusher, the adjusting ring will rise as a result of the spring safety system is make-up compression. When the discharging hole restores to its original position, the adjusting ring will return to its initial position. After two or three times of extrusion, these materials will pass through the crusher.
4. Our pre-crushing equipment is designed with a hydraulic unloading system. Hydraulic unloading of large uncrushed materials helps ensure the shortest stopping time of our pre-crushing equipment. When the crusher is blocked by large uncrushed materials, a special hydraulic jack for support ring will rapidly and safely unload the blocked crusher.
Shanghai Esong Mining Machinery Co., Ltd.
NO.1515, Luo ning Road , Baoshan District shanghai
Country/Region: China (Mainland)
Southern Heat Exchanger 450 Sq. Ft. Shell & Tube – 304L Stainless Steel
304L-SS Shell rated 50 PSI @ 300 deg F. 304L-SS Tubes rated 100 PSI @ 300 deg F. 304L-SS Heads. 1′ 6″ Shell dia, (96) 3/4″ Tubes x 12′ L. (OAL – 15′ 5″) 1 Pass Shell & 2 Pass Tube. Shell nozzles: (2) 4″; Tube nozzles: (2) 4″. Type BEU. Built by Southern Heat Exchanger, 1994. NB #7888. Used as Dehydrator Condenser. U-1 & Drawing on file.
Phoenix Equipment Corporation
58 Second Street
Perth Amboy, NJ 08861
Toll free: 877-736-9320
Ron Synarski – Equipment Sales Manager
Alfa Laval Plate Heat Exchangers.
Available in more than 20 models, brazed Plate Heat exchangers (BHE’s) have stainless steel plates, copper brazed for high thermal efficiency and strength, Designed for refrigeration and AC duties, BHE’s handle HCFC, HFC, HC and CO2 refrigerants. As dry expansion evaporator, they feature integrated flow equalization for maximum cooling performance. Three models are equipped with double refrigerant circuits. Temperature range – 100oC to 200oC; pressure in excess of 40 bar.
Extremely compact, low weight, easy to install
Low refrigerant charge
Even flow distribution with stable superheat capability
Safe oil Scatter, even with low loads
Safe capacity control due to double refrigerant circuits
Floating condensation temperature with flooded evaporations systems
Can be optimized with air liquid coolers in indirect cooling systems.
Water-glycol cooled condensers
DX evaporators, single and double circuits
Indirect and direct System:
Desuperheater for heat recovery
Alfa Laval Fusion-bonded Plate Heat Exchanger:
Available in 5 sizes and various pressure levels. AlfaNova is a completely new type of plate heat exchanger, the world’s first plate heat exchanger, made of 100% stainless steel. It is based on Alfa Laval’s new revolutionary techonology. AlfaFusion, the art of joining stainless steel components together. AlfaNova heat exchanger are well suited in applications which put high demand on cleanliness, applications where e.g. Ammonia or LiBr are used or application where copper or nickel contamination is not accepted AlfaNova is made for high thermal efficiency and strength as well as good resistance, pressure and thermal fatigue, Temperature range: 50oC to 22oC; pressure in excess of 25 bar.
Same benefits as the brazed heat exchangers with some additions e.g:
100% stainless steel construction ensures unbeatable durability
High corrosion resistance
Indirect and/or direct Systems Within Ammonia Refrigeration:
Absorption systems (LiBr)
Hydraulic oil Cooling
Alfa Laval Gasketed Heat Exchangers:
Designed to allow full optimization with the chiller, the Gasketed Plate Heat Exchanger (GPHE) range includes versions to cope with pure, corrosive, foulant and hygienic fluids in combination with chiller evaporators and condensers. Plate designs prevent fouling through even flow distribution, high turbulence and no stagnant areas. GPHE’s are available in stainless steel, titanium and high nickel alloy materials. Operating pressure up to 25 bar, operating temperature up to 180oC; flow rates up to 3,000 m3/h.
Compact, low weight
Efficient with close temperature approach and small loss of chiller efficiency.
Low fouling with raw water, no corrosion
Easy to open with advanced bolt closing system
Long-life, glue-free gaskets means easy on-site replacement
No risk of inter leakage
Intercoolers, isolating chiller condensers for corrosion and fouling resistance
Intercoolers in free cooling or chiller bypass systems with air coolers, cooling towers ans sea, river or lake water as heat sink
Interchangers in reversed AC/heat pump application
District cooling distribution interchangers
Pressure interceptors for tall building
Alfa Laval Semi-Welded Heat Exchangers:
The Semi-Welded Plate Heat Exchanger (SWPHE) is available in six models. The refrigerant flows in laser-welded, sealed plate channels and the brine in gasketed channels. The flexible design copes with fatigue stresses and ice formation. The SWPHE handles most refrigerants on the welded side and is particularly suitable for ammonia duties. Standard plate materials are stainless steels and titanium. Temperature range – 45oC to 130oC; pressure upto 25 bar.
Low charge, low weight
Easy to modify heat transfer area for altered capacities, refrigerants
Easy inspection and cleaning of the liquid side.
Reliable, with long service life for heavy duties
Plate materials for corrosive fluids, cooling water and brines
Condender/desuperheater or condenser/oil cooler combined in single unit
Floating condensation with flooded evaporation
Can be optimized with air liquid coolers in indirect cooling systems
Water-glycol cooled condenser
DX evaporators, single and double circuits
Indirect and direct Systems:
Desuperheater for heat recovery
Water-cooled oil coolers
NTEGRATED ENGINEERS & CONTRACTORS
An ISO 9001 Certified Company
AM -174, 2nd Floor, Shalimar Bagh,Delhi – 110088, India
Email Us : firstname.lastname@example.org
Mr. Puneet Poddar (C.E.O.)
Welded plate heat exchanger 32bar, 315C. Modern plate heat exchangers must also be extremely robust. With the EcoWeld product line we are meeting this demand and are simultaneously answering your call for more economic efficiency. The fully welded units are suitable for use with all critical media, can withstand highest operating temperatures and pressures and offer maximum reliability.
EcoWeld stands for sturdy power packs offering a wide range of strong advantages. The plate heat exchangers are welded, have a compact design and feature outstanding heat transfer coefficients.
Ideal in power stations, the chemical industry, in refrigeration engineering, marine applications, etc. Practically wherever gasketed EcoFlex or brazed EcoBraze plate heat exchangers reach their limits.
GEA PHE Systems North America, Inc.
100 GEA Drive
York, PA 17406 USA
Toll Free (US & Canada): 1-800-774-0474
Phone: +1 717-268-6200
Fax: +1 717-268-6163
Plate Heat Exchanger M10M
1. Plate thickness: 0.5-1.0mm;
2. Connection Diameter: DN25-DN300;
3. Max working pressure: 13bar;
4. Max working temperature: 180C;
5. Plate materials: SUS304, 316, 316L, 310S, 904, TAi, TAi-Pd, C276, D205, B2G, Ni200 and 254MO (optional)
6. Plate type: BH and BV
7. Optional rubber material for sealing gasket: NBR, HNBR, EPDM, solvent EPDM, general flour rubber and special flour rubber
8. Applicable to heat supply, air conditioning, chemicals, machinery, metallurgy, steel medicines, food, oil field, shipbuilding and light industry
9. Customized specifications are accepted
Yangzhou PanstarHeat-Exchange Equipment Co.,Ltd.
Rm. 413, Jinghui Plazza, No. 277,
Yangdong Rd., Suzhou, Jiangsu, China
Plate Heat Exchanger, spiral heat exchanger and disk & shell heat exchanger for all use. District heating & cooling, oil coolers for power plant & engine, steam and gas condenser, evaporater, heat exchangers for chemical plant & marine application.
DHP Engineering Co.
265 Sunji-Ri, Juchon-Myun
Country/Region: South Korea
Crush and pre-homogenization Crushing cement production line. Crush and pre-homogenization Crushing cement production process, most of the material to be crushed, such as limestone, clay, iron ore and coal. Limestone is the largest amount of raw materials, cement production, mining the particle size after the large, high hardness, so the broken limestone crushing the material in the cement plant occupies a more important position.
In Cement process,most of the raw materials used are extracted from the earth through mining and quarrying and can be divided into the following groups: lime (calcareous), silica (siliceous), alumina (argilla- ceous), and iron (ferriferous). Since a form of calcium carbonate, usually limestone, is the predominant raw material, most plants are situated near a limestone quarry or receive this material from a source via inexpensive transportation. The plant must minimize the transporta- tion cost since one third of the limestone is converted to CO2 during the pyroprocessing and is subsequently lost. Quarry operations consist of drilling, blasting, excavating, handling, loading, hauling, crushing, screening, stockpiling, and storing.We provide crushing screening, grinding machines,such as jaw crusher,cone crusher,ball mill,vertical roller mill.
Mining machinery manufacturers Vipeak Machinery Group Company
Cement Production Line.
Raw materials extraction (mining) → crushing→ raw materials storage and pre-homogenization (ball mill) →raw material homogenization and storage, calcinations (raw material enter into rotary kiln after pre-heater in cyclone tube, calcinated to clinker) → cement grinding (mix other chemical material according to cement quality to grind) → cement storage and transportation.
This is a simplified process of cement production. Our company can supply almost all the equipments in all the necessary section of this line. We can also provide unique solution to our customer.
The main raw materials used in the cement manufacturing process are limestone, sand, shale, clay, and iron ore. The main material, limestone, is usually mined on site while the other minor materials may be mined either on site or in nearby quarries. Another source of raw materials is industrial by-products. The use of by-product materials to replace natural raw materials is a key element in achieving sustainable development.
Raw Material Preparation
Mining of limestone requires the use of drilling and blasting techniques. The blasting techniques use the latest technology to insure vibration, dust, and noise emissions are kept at a minimum. Blasting produces materials in a wide range of sizes from approximately 1.5 meters in diameter to small particles less than a few millimeters in diameter.
Material is loaded at the blasting face into trucks for transportation to the crushing plant. Through a series of crushers and screens, the limestone is reduced to a size less than 100 mm and stored until required.
Depending on size, the minor materials (sand, shale, clay, and iron ore) may or may not be crushed before being stored in separate areas until required.
In the wet process, each raw material is proportioned to meet a desired chemical composition and fed to a rotating ball mill with water. The raw materials are ground to a size where the majority of the materials are less than 75 microns. Materials exiting the mill are called “slurry” and have flow ability characteristics. This slurry is pumped to blending tanks and homogenized to insure the chemical composition of the slurry is correct. Following the homogenization process, the slurry is stored in tanks until required.
In the dry process, each raw material is proportioned to meet a desired chemical composition and fed to either a rotating ball mill or vertical roller mill. The raw materials are dried with waste process gases and ground to a size where the majority of the materials are less than 75 microns. The dry materials exiting either type of mill are called “kiln feed”. The kiln feed is pneumatically blended to insure the chemical composition of the kiln feed is well homogenized and then stored in silos until required.
Whether the process is wet or dry, the same chemical reactions take place. Basic chemical reactions are: evaporating all moisture, calcining the limestone to produce free calcium oxide, and reacting the calcium oxide with the minor materials (sand, shale, clay, and iron). This results in a final black, nodular product known as “clinker” which has the desired hydraulic properties.
In the wet process, the slurry is fed to a rotary kiln, which can be from 3.0 m to 5.0 m in diameter and from 120.0 m to 165.0 m in length. The rotary kiln is made of steel and lined with special refractory materials to protect it from the high process temperatures. Process temperatures can reach as high as 1450oC during the clinker making process.
In the dry process, kiln feed is fed to a preheater tower, which can be as high as 150.0 meters. Material from the preheater tower is discharged to a rotary kiln with can have the same diameter as a wet process kiln but the length is much shorter at approximately 45.0 m. The preheater tower and rotary kiln are made of steel and lined with special refractory materials to protect it from the high process temperatures.
Regardless of the process, the rotary kiln is fired with an intense flame, produced by burning coal, coke, oil, gas or waste fuels. Preheater towers can be equipped with firing as well.
The rotary kiln discharges the red-hot clinker under the intense flame into a clinker cooler. The clinker cooler recovers heat from the clinker and returns the heat to the pyroprocessing system thus reducing fuel consumption and improving energy efficiency. Clinker leaving the clinker cooler is at a temperature conducive to being handled on standard conveying equipment.
Finish Grinding and Distribution
The black, nodular clinker is stored on site in silos or clinker domes until needed for cement production. Clinker, gypsum, and other process additions are ground together in ball mills to form the final cement products. Fineness of the final products, amount of gypsum added, and the amount of process additions added are all varied to develop a desired performance in each of the final cement products.
Each cement product is stored in an individual bulk silo until needed by the customer. Bulk cement can be distributed in bulk by truck, rail, or water depending on the customers needs. Cement can also be packaged with or without color addition and distributed by truck or rail.
Henan King State Heavy Industry Machinery Co., Ltd
Mob: +86-187 0383 4768
International trade: +86-371-55638952 55638988 55638937 55638938 55638939 55638950 55638951 55638953
Add: North Section of dongfang Road,
Mazhai Industrial Park, Zhengzhou City, China