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Cement Plant Equipment,Cement Plant Production Line Process
Cement production line
Cement production line (cement plant equipment) is a range of facilities to produce cement, cement production line equipment. Mainly constituted by crushing and pre-homogenizing, raw material preparation homogenizing, preheat decomposition, the firing of cement clinker, cement grinding packaging process.
Cement plant equipment contains equipment
Cement plant equipment including: cement rotary kiln, cyclone preheater, grate coolers, etc.
Cement rotary kiln is the main equipment for calcining cement clinker has been widely used in cement, metallurgy, chemical and other industries. The equipment consists of the cylinder, the supporting device, with a gear wheel bearing device, transmissions, activity Yaotou, kiln end sealing device, combustion devices, components, the rotary kiln has a simple structure, reliable operation, easy production process control and other features.
Cyclone preheater suitable for supporting the use of various type of kiln in transforming digestion on the introduction of 800 tons Kawasaki, Japan, Nissan, Nissan 1000 tons of cement clinker equipment foundation, developed by a Nissan 500 tons to 2000 tons with a calciner fivesuspension preheater. Preheater can be widely used in new construction and renovation of the medium and small cement plant equipment.
Grate cooler is a sudden cold cooler principle is: blower blowing cold air, will be laid on the grate board into layered clinker to be quenched, the clinker temperature plummeted from 1200 ℃ to 100 ℃following, the cooling of a large number of exhaust gas in addition into the kiln as secondary air.
Cement production process (cement plant equipment processes) Figure
Cement production process
1. crushing and pre-homogenization
(1) crushing cement production process, most of the raw materials to be broken, such as limestone, clay, iron ore and coal. Limestone to produce the maximum amount of cement raw materials, after mining the larger particle size, high hardness, therefore limestone crushing occupies a more important position in the cement material crushing machinery.
(2) raw material pre-homogenizing pre-equalization technology is in the retention of the raw materials, to take the process to use the scientific stacker reclaimer technology, raw materials are initially raw material yard along with storage and homogenization function.
2. raw material preparation
Cement production process, each producing 1 ton of Portland cement equipment to be grinding at least 3 tons of materials (including all kinds of 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 power of the whole plant, which accounted for 30% of the raw material grinding, accounting for about 3% of coal mill, cement grinding about 40%. Therefore, a reasonable choice of grinding equipment and process optimization of process parameters, the correct operation, and control of the operating system, is of great significance to ensure product quality, reduce energy consumption.
3. raw material homogenizing
Dry cement production process, stable The pit entry of raw material composition is stable clinker burning thermal system on the premise, the raw material homogenization system plays a gatekeeper role last stable Rujiao raw ingredients.
4. preheat decomposition
Cement machinery preheating and partial decomposition of the raw material by the preheater to complete, instead of some of the features of rotary kiln, to shorten the length of the back to the kiln, while the kiln heat transfer process of the gas feed to the accumulation of state, moved to the preheater internal suspended state, so that the raw material can be discharged with the kiln hot gases sufficiently mixed, increase the contact area of the gas feed, fast heat transfer, heat exchange efficiency is high, to achieve the goal of improving the kiln system production efficiency, reducing the clinker calcination heat consumption purposes.
(1) material dispersed
Exchanger 80% in the inlet conduit. Raw material in the feed preheater pipe in the updraft and high-speed impact of material folded steering on with the air movement, while being dispersed.
(2) The gas-solid separation
When the gas stream to carry the feed powder into the cyclone cylinder, forced in the annular space between the cyclone barrel and the inner cylinder (exhaust pipe) rotating flow, and the downward movement while rotating the barrel to the cone , has been able to extend to the end portion of the cone, and then turned on the rotation rise from the exhaust pipe.
The emergence of the precalciner technology is a technological leap calcining process cement equipment. It is between the preheater and the rotary kiln additional decomposition of the furnace and the utilization of kiln inlet rise flue, provided that the fuel is injected into the device, so that decomposition of the endothermic process of fuel combustion in an exothermic process and raw materials carbonate in the decomposition furnace quickly suspended state or fluidized state, the decomposition of the kiln feed rate increased to 90% or more. Moved exploded original carbonate decomposition of tasks carried out in a rotary kiln, furnace; the fuel most Precalciner Add small part by Yaotou Add, reducing the thermal load of the kiln with, extending liner material life, is conducive to large-scale production; mixed fuel and raw material, fuel burning heat timely passed to the materials, combustion, heat exchangers, and carbonate decomposition process has been optimized. Quality, high efficiency, low power consumption, and thus has a range of excellent performance and features.
5, Cement clinker calcination
After the completion of preheating and precalcining the raw material in the cyclone preheater, the next step is to enter the firing of the rotary kiln, clinker.
Carbonate in the rotary kiln further rapid decomposition and a series of solid-phase reaction to produce cement clinker and other minerals. With increasing temperature of the material near the other mineral becomes liquid, dissolved in the liquid phase and the reaction was carried out to generate a large number of (clinker). Clinker after baking, the temperature began to decrease. Hot clinker rotary kiln will be unloaded by the cement clinker cooler cooling to the downstream conveyor, storage the library and cement machinery can withstand temperature, while recovery of the sensible heat of the hot clinker to improve the thermal efficiency and clinker quality.
6, Cement grinding
Cement machinery cement manufacturing process, and also a power-up process. Its main function is to cement clinker (and gelling agent, performance tuning materials, etc.) grinding to appropriate particle size (fineness, specific surface area), the formation of a certain particle size distribution, increasing its hydration area, accelerate the hydration rate, to meet cement paste condensation, hardening requirements.
7, Cement packaging
Both bagged and bulk cement factory shipping way.
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In order to recommend you the most suitable plant, you are kindly requested to tell us the below information:
1 what kind of stone do you want to crush?
2 what is the material size before crushing?
3 what is the final product size do you want?
4 what is the capacity you want tons per hour?
5 what will you do with the final products?