How to classify aggregates | Types of Aggregates.
Aggregates are variously classified on the foundation of their grain size, their origin, and their volume-weight as follows:
1.Aggregate Types on the foundation of Grain Size.
This is the most common classification, the place in two sorts of aggregates are distinguished: (Fine and Coarse).
(1) Fine Aggregates.
In the Fine Aggregates, the grain-size lies between 4.75 mm and 0.15 mm.
(2) Coarse Aggregates:
Coarse aggregates are those that are retained on the sieve of mesh dimension 4.75 mm.
2.Types on the Basis of origin.
There are three kinds on the Basis of Origin.
(1) Natural:
These include all these types of first-rate and coarse aggregates, that are reachable in nearly prepared to use form, from herbal resources.
(2) Bye-product:
These encompass materials obtained as wastes from some industrial and metallurgical engineering operations, which possess appropriate residences for being used as aggregate.
(3) Processed:
These structure a specific class in Aggregate. They are especially manufactured for use in making Quality Concretes.
3.Types on the Basis of Density.
Three kinds of aggregates are individual on the groundwork of their weight per unit volume.
(1) Standard or Normal:
These kinds of aggregates supply strength and weighting to the Concrete of around two 2300 to 2500 kg/m3.
(2) High-Density Aggregates:
These are that kind of Aggregates, which is used in fashionable proportions yield in heavy weight concretes.
(3) Light weight Aggregate:
They consist of herbal and artificial materials of very low density so that the resulting concrete is also pretty Light in weight, usually with in a vary of 350 to 750 kg/m3.
More details: https://www.lzzgchina.com
2019年8月23日星期五
2019年8月18日星期日
Wastewater Treatment Belt Press
LZZG Belt filter presses are designed for dewatering applications where sludge is particulate, include various types of industrial wastewater sludge, such as sand-making mud, washed sand mud, mine tailings, piling mud, river silt, etc.
They are pumped to the deep cone thickener, the flocculant is added to the thickener tank, and the concentration of the sludge in the thickener is increased by 60%-70% under flocculation and gravity precipitation.
Then sent to the belt filter presses, under the action of a gravity zone, a wedge zone, and a pressure zone , the sludge cake with water content of less than 20% is formed and the overflow clean water will be re-processing.
More details: https://www.lzzgchina.com/
2019年8月14日星期三
The best sand washing machine from China
What is sand washing machine?
Sand washing equipment is utilized to expel the residue and stone powder in the sand created by sand making machine, it likewise can do sand-choosing work or the comparable procedure. The machine expects to enhance the quality and grade of the sand.
The screw sand washer is for the most part utilized for sand preparing, electric post industrial facility, building work site and solid dam, different sands arranging and dewatering.The screw washer embraces tendency of 15°,under the water tub, three weir plates frame the dregs pool, the fasten head is drenched this pool, the screw is driven by electric engine through reducer pivoting persistently, the crisp water is sustaining from permeable plate at base of silt pool, this machine have three elements of washing, dewatering, characterizing.
The screw sand washer application:
Screw classifier can successfully seperate the mud among the material and clean the coal and sand. The materials are passed on to the assigned positon while cleaning and drying as the sprial mixes. winding sand washer is outstanding for its strict triple fixing framework, which ensures the soundness while pocessing.
screw washer is perfect for cleaning troublesome material. Extreme insoluble muds, combinations and delicate stone, and certain established totals are too hard to even think about cleaning appropriately in ordinary screw machines. The log washer altogether scouring, separates, and cleans the hardest materials. These high caliber, exceptionally sturdy machines perform well under the hardest dirt conditions with least power, water and downtime.
How can it function?
The electric engine runs gradually with the impellor after decelerated by the belt, decelerator and gears wheel. The sand and stone stream into washing wash from sustaining wash, moves with the impellor, and granulates one another. The contamination covering the sand is washing ceaselessly. In the meantime, include more water, the solid water stream will remove waste and some low-weight squanders from washing wash. Through the above procedure, the washing capacity is done. The spotless sand and stone is lift up by vane. When it goes up gradually, the water starts to drop through the work and fall back in the washing wash.
Fundamental Features of Screw Type Sand Washer
1. Basic structure, the impeller bearing is detached from water, significantly to keep the bearing because of flooding, sand and toxins lead to the harm.
2. There is little misfortune for medium-sized and fine sand or fine stone powder. The item is met to national principles, for example, "sand for development".
3. There is no other wearing part with the exception of the screen work.
4. Long administration life and multiple times for upkeep.
Sand washing equipment is utilized to expel the residue and stone powder in the sand created by sand making machine, it likewise can do sand-choosing work or the comparable procedure. The machine expects to enhance the quality and grade of the sand.
The screw sand washer is for the most part utilized for sand preparing, electric post industrial facility, building work site and solid dam, different sands arranging and dewatering.The screw washer embraces tendency of 15°,under the water tub, three weir plates frame the dregs pool, the fasten head is drenched this pool, the screw is driven by electric engine through reducer pivoting persistently, the crisp water is sustaining from permeable plate at base of silt pool, this machine have three elements of washing, dewatering, characterizing.
The screw sand washer application:
Screw classifier can successfully seperate the mud among the material and clean the coal and sand. The materials are passed on to the assigned positon while cleaning and drying as the sprial mixes. winding sand washer is outstanding for its strict triple fixing framework, which ensures the soundness while pocessing.
screw washer is perfect for cleaning troublesome material. Extreme insoluble muds, combinations and delicate stone, and certain established totals are too hard to even think about cleaning appropriately in ordinary screw machines. The log washer altogether scouring, separates, and cleans the hardest materials. These high caliber, exceptionally sturdy machines perform well under the hardest dirt conditions with least power, water and downtime.
How can it function?
The electric engine runs gradually with the impellor after decelerated by the belt, decelerator and gears wheel. The sand and stone stream into washing wash from sustaining wash, moves with the impellor, and granulates one another. The contamination covering the sand is washing ceaselessly. In the meantime, include more water, the solid water stream will remove waste and some low-weight squanders from washing wash. Through the above procedure, the washing capacity is done. The spotless sand and stone is lift up by vane. When it goes up gradually, the water starts to drop through the work and fall back in the washing wash.
Fundamental Features of Screw Type Sand Washer
1. Basic structure, the impeller bearing is detached from water, significantly to keep the bearing because of flooding, sand and toxins lead to the harm.
2. There is little misfortune for medium-sized and fine sand or fine stone powder. The item is met to national principles, for example, "sand for development".
3. There is no other wearing part with the exception of the screen work.
4. Long administration life and multiple times for upkeep.
Sludge Thickening Machine
Dewatering, Liquid-Solid Separation, Classification, Thickening & Water Recycling
Dewatering & Liquid-Solid Separation
In the processing of aggregates, frac sand, coal and other industrial minerals, Belt filter press has proven reliable and efficient in the dewatering process and liquid solid separation.
Whether it's coal plant refuse dewatering, aggregate and mineral tailings dewatering, sludge and residuals slurry separation, or sludge dewatering for municipal and industrial wastewater treatment systems, Belt filter press have a variety of liquid solid separation and dewatering process technology.
Industrial waste product treatment plants ar designed to satisfy pretreatment water needs before downstream WWTP municipal facilities and / or turn out clean, safe water for direct discharge at intervals the desired limits.
Because the needs for cleaner discharge waters increase thus will the sophistication of commercial treatment processes being designed and engineered these days. And, bottle centrifuges ar being extensively used additional and additional for liquid- solid separation, sludge dewatering, and sludge thickening applications as a part of these pretreatment and / or kit and boodle operations.
What is Belt Filter Press?
Belt Filter is a broadly applicable product for dewatering municipal Biosolids and industrial sludges. Dewatering, Liquid-Solid Separation, Classification, Thickening & Water Recycling Technologies.
What is Belt Filter Press?
Belt Filter Press is a sludge dewatering device that applies mechanical pressure to a chemically conditioned slurry, which is sandwiched between two tensioned belts, by passing those belts through a serpentine of decreasing diameter rolls.
The machine can actually be divided into three zones: the gravity zone, where free draining water is drained by gravity through a porous belt; the wedge zone, where the solids are prepared for pressure application; and the pressure zone, where medium, then high pressure is applied to the conditioned solids.
What is Belt Filter Press?
Belt Filter Press is a sludge dewatering device that applies mechanical pressure to a chemically conditioned slurry, which is sandwiched between two tensioned belts, by passing those belts through a serpentine of decreasing diameter rolls.
The machine can actually be divided into three zones: the gravity zone, where free draining water is drained by gravity through a porous belt; the wedge zone, where the solids are prepared for pressure application; and the pressure zone, where medium, then high pressure is applied to the conditioned solids.
How about LZZGChina?
Founded in 2010, LZZG is a professional manufacturer of mining machinery, mainly engaged in research and development of sand washing machine, dewatering screen, vibrating screen and fine sand recycling machine. Which is widely used in sand and gravel plants, mineral processing plants, construction, water conservancy and hydropower, chemical, transportation, concrete mixing stations and other industries.
After 10 years of development, lzzg has developed into a leader in the industry.
After 10 years of development, lzzg has developed into a leader in the industry.
(LZZGChina)Luoyang Longzhong Heavy Machinery Co., Ltd. is an international enterprise specialized in R & D, production and marketing of mining machinery and industrial milling equipment. Our company develope the production of mining machinery and industrial milling equipment, crusher products are widely used in mining, metallurgy, construction, chemical, power, steel and other industries.
Since its inception, the company quickly occupied the global market by its reliable product quality and perfect after-sales service. The products are exported to Europe, Australia, North America, South America, Southeast Asia, the Middle East, Central Asia, Africa and other countries.
The company has senior design engineers of the mining machinery and industrial milling equipment, domestic and foreign famous universities, degrees, and other technical elites, to provide an inexhaustible driving force for sustainable development of enterprises, and they work together to ensure the long product development, design, production and after-sales service in every aspect of efficient and perfect.
The company has senior design engineers of the mining machinery and industrial milling equipment, domestic and foreign famous universities, degrees, and other technical elites, to provide an inexhaustible driving force for sustainable development of enterprises, and they work together to ensure the long product development, design, production and after-sales service in every aspect of efficient and perfect.
Company based on market demands, always adhere to the development strategy of large research and development, precise production, and excellent service, by virtue of the excellent quality products and efficient service to meet customer needs, so that the Luoyang Longzhong Heavy Machinery thinks globally! We will fully meet your diverse needs, and cast your new brilliant!
2019年8月10日星期六
How does belt filter press work?
Belt Filter Press dewaters slurries of pre-thickened solids from a pumpable liquid phase to a solid, conveyable, and stackable cake.
Today, belt filter press dewatering remains a preferred technology in the construction aggregate, mining, industrial and municipal markets.
Today, belt filter press dewatering remains a preferred technology in the construction aggregate, mining, industrial and municipal markets.
(1) Thickener dehydration: chemical pretreatment stage
The belt filter press has higher requirements for flocculation effect. This machine uses a unique dosing mixer to achieve rapid flocculation and achieve the best flocculation effect.
(2) Gravity dehydration: gravity concentration dehydration stage
The sludge is evenly fed into the mesh belt through the cloth bucket. The sludge runs forward with the filter belt. The free water flows into the water tank through the filter belt under the action of its own weight. The main function is to remove the free water in the sludge, so that the fluidity of the sludge is reduced and ready for further extrusion.
(3) Low/medium pressure dewatering: wedge preloading dewatering stage
After gravity dewatering, it is still difficult to meet the sludge flowability requirements of the press dewatering section. After this stage of slight extrusion dewatering, the sludge is smoothly pressed and dewatered.
(4) High pressure dehydration: the depressurization stage of the clamp press
The filter cake is repeatedly pressed and sheared around the press roll by the upper and lower filter belts. A large amount of capillary action water is removed to gradually reduce the moisture of the filter cake.
Belt Filter Press
LZZG Sludge Dewatering Belt Filter Press is a widely applicable product for efficient dewatering of sludge from municipal, industrial, mining and aggregaes wastewater treatment. Especially suitable for dewatering of tailings mud such as iron ore, copper ore, lead-zinc ore, fluorite ore, bauxite or rare earth ore; Dewatering operations such as ore dressing wastewater, sand washing mud, and wash plant sludge.
The slurry is sandwiched between two tensioned porous belts, by passing those belts through a serpentine of decreasing diameter rollers. Water is then removed from the slurry and a solid material is produced.
2019年8月9日星期五
Sand Washing System For Artificial Sand
LZZG sand washing system is a combination of a fine material washer and a dewatering screen in a single machine, and producing instantly salable material with a moisture content as low as 8%.
300 T/H Sand Washing Plant Used For Sand Making
Capacity: 300T/H
Equipments: LZZG Sand Washer
Vibrating Screen
Belt Convery
Sand Maker
Jaw Crusher
Impact Crusher
LZZG provide one-step service: field service, production solutions, installation. More information: export@lylzzg.com
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