Sodium bentonite processing method and system based on vertical roller mill
A vertical roller mill, sodium bentonite technology, applied in dryers, lighting and heating equipment, grain processing and other directions, can solve problems such as uncontrollable moisture, affecting the fineness and purity of finished products, and no ventilation and hot air drying. , to avoid condensation and sticking, the system runs stably and reliably, and reduces equipment investment.
Pending Publication Date: 2022-04-08
HENAN LIMING HEAVY IND SCI & TECH
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Problems solved by technology
[0003] The traditional sodium-based bentonite processing method is: calcium-based soil raw ore → crushing → sodium (adding sodium carbonate, wet method also needs to add water) → mixing → extrusion → dryer drying → milling powder → air classification → sodium-based Indigenous products (packaging), its shortcomings: 1. Need to invest in a separate dryer for drying: (1) The dryer occupies a large area; (2) The dryer is noisy, and the noise can reach 150 decibels (3) The thermal efficiency is low. The thermal efficiency of the dryer is usually between 30% and 50%. More heat is lost through the cylinder in the form of thermal radiation, resulting in a large waste of energy consumption and directly improving production. The cost is also not in line with the "energy saving and emission reduction" policy advocated by the state; (4) The dryer is likely to cause excessive dehydration of bentonite, making the recovery process of its water absorption performance extremely slow; 2. The equipment piping system is also prone to condensation; Due to the high viscosity of bentonite, when the air temperature of the system is not suitable, it cannot be adjusted, and it is easy to cause sticking and clogging, resulting in poor ventilation pipes in the system, greatly reducing the area of the pipes, and causing the system wind speed to be too high, resulting in The resistance of the system gradually increases, and the production capacity decreases until the system cannot work normally; 3. The raw materials often contain a lot of impurities such as quartz and feldspar; (1) The impurities are accelerated to 20-30m / s under the action of wind, and the grinding The powder machine equipment and pipelines cause erosion, which causes great wear and tear on the equipment and reduces the service life of the equipment; (2) These impurities are mixed into the finished product, affecting the fineness and purity of the finished product
[0004] In addition, the traditional Raymond mill is usually used in the existing process, and the milling system is a closed loop system without the function of hot air drying, the temperature cannot be adjusted and controlled, and the moisture in the milling process cannot be controlled. Low and affect the quality of the product
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[0031] Below in conjunction with accompanying drawing, the application is described in further detail, with reference to figure 1 and 2 .
[0032] In order to solve the problems of high energy consumption, high noise, high wear and low montmorillonite content in the existing bentonite processing technology, which need to install dryers and Raymond mills in sections, the present invention provides a drying and grinding machine. A bentonite fine powder preparation system and processing method that integrate powder, slag discharge and purification.
[0033] A kind of sodium bentonite grinding processing method based on a vertical roller mill of the present invention comprises the following steps in turn: Step 1: feeding; Step 2: integrated drying, grinding, slag discharge and purification; Step 3: collecting and Finished product packaging; step 2: integrated drying, grinding, slag discharge and purification; materials are fed into the vertical roller mill, and hot air at 120-18...
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The invention relates to the technical field of bentonite processing and production, and discloses a sodium bentonite processing method and system based on a vertical roller mill, and the processing method comprises the following steps: feeding, integrally drying, grinding, deslagging and purifying, collecting and packaging a finished product. The processing system comprises a vertical roller mill, a dust collector, an induced draft fan and a hot air device, closed-loop hot air circulation is formed, low-temperature drying of bentonite is achieved by controlling the temperature and pressure of hot air, the phenomena of condensation and sticking and blocking are avoided, the system runs stably and reliably, equipment investment is reduced, the technological process is shortened, and the production cost is reduced. And the product quality and the production efficiency are improved, the service life of equipment is prolonged, the energy consumption in the drying link can be saved, and efficient and energy-saving production is really realized.
Description
technical field [0001] The invention belongs to the technical field of bentonite processing and production, and in particular relates to a sodium-based bentonite processing method and system based on a vertical roller mill. Background technique [0002] Due to its good physical and chemical properties, bentonite is known as "universal" clay. It can be used as purification and decolorization agent, binder, thixotropic agent, suspending agent, stabilizer, filling material, feed, catalyst, etc., and is widely used in agriculture. , light industry and cosmetics, pharmaceuticals, foundry, pellets, drilling mud and other fields. [0003] The traditional sodium-based bentonite processing method is: calcium-based soil raw ore → crushing → sodium (adding sodium carbonate, wet method also needs to add water) → mixing → extrusion → dryer drying → milling powder → air classification → sodium-based Indigenous products (packaging), its shortcomings: 1. Need to invest in a separate dryer ...
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Login to View More IPC IPC(8): B02C21/00F26B21/10B02C23/24B02C15/00B02C23/00B02C23/04
Inventor肖威郭华洋李刚刚郝洪锋张国成杨聪俐
OwnerHENAN LIMING HEAVY IND SCI & TECH