Dolomite’S Type,Formation And Application In Construction Field

Dolomite is carbonate rocks by using dolomite as main component, containing a small amount of calcite and clay minerals, the main component is calcium magnesium carbonate, and a small amount of silica, iron oxide, alumina and other, similar in appearance to limestone, light gray, white or black. Field identification of dolomite and limestone of practice is usually drops of hydrochloric acid, dolomite is not foaming or weak foam, foaming violent limestone.

Type of Dolomite

syngenetic dolostone: sedimentary diagenesis early or pen contemporaneous micritic dolomite formation composed of dolomite, fabric uniform and compact size, usually less than 0.03 mm, a stable horizon, development fine bedding, rarely contain fossils, no sign of dolomite metasomatism.

Diagenetic dolostone: is in the process of calcium carbonate by magnesium ion metasomatic rock formation. Dolomite is fine grain structure, dolomite is about 0.1 ~ 0.01 mm granular irregular diamond crystal, crystal is muddy like, containing more calcium carbonate enclaves or cloud core structure, one can often see the dolomite metasomatic calcium carbonate granules, biogenic traces, as Yanbai Yunyan often like layers, lenticular output, line is not regular contact with limestone.

Epigenetic dolomite (secondary dolomite): It is consolidated into limestone, followed by magnesium ion replacement dolomite formed. A replacement structure was not uniform, white coarse size, size is differ, developmental euhedral rhomb and band structure. Rock pore, bedding is not obvious, only residual stratification structure and biological and nuclear. Epigenetic dolomite rock mass and surrounding unaffected by dolomitization is abrupt contact.

Cause Of Formation

The origin of dolomite is always a difficult problem. Experiments prove that the theory of dolomite, synthesis of ordered can only be above 200 ℃. In 200 ~ 120 ℃ synthesis are disordered raw dolomite.

Modern sedimentary dolomite has been found in the Caribbean island of Andrews, Florida Bay, the southeast coast of Australia, south of the COORONG Lake Persian Gulf Qatar Abu Zabi beach etc. Modern dolomite sediments in order not to good primary dolomite, formed mainly in 0 ~ 3 meters of the supratidal zone, intertidal zone, or, more than pH>9, than that of normal seawater salinity high 5 ~ 8 times of the salt water. From the thermodynamic equilibrium, it cannot be directly ordered Dolomite Precipitation from seawater, therefore Mr. into calcium carbonate mineral, Mg ion replacement by dolomite formation in solution theory.

Application Of Dolomite

Dolomite used in blast furnace of the solvent in the metallurgical industry, but also can be used as basic materials, also be used for manufacturing magnesium sulfate, calcium magnesium phosphate fertilizer production of glass, ceramic raw materials, ingredients, shaping can be used as building materials.

THE PRODUCTION PROCESS OF BASALT PROCESSING

Basalt is extrusive rock, rock forming minerals is similar with gabbro. It is genus of vitreous or cryptocrystalline texture, vesicular and amygdaloidal structure. Compressive strength with the structure of basalt vary greatly (100~500MPa), density is 2900~3500kg/m3.

Basalt has wear-resisting, less water, the poor conductivity, strong compression, low crushing value, strong corrosion resistance, and adhesiveness of asphalt. It is the best material in construction of highway, railway, and airport runway. Among them, the multi vesicular basalt, also known as pumice, has more pores and hard texture, it can be mixed in concrete and make the concrete weight, not only durable, and sound insulation, heat insulation and other characteristics, which is a good aggregate of lightweight concrete high-rise building.

In The First Stage:The raw material is conveyed to the jaw crusher for primary crushing through the hopper and a vibrating feeder uniform feeding. After primary crushed material and fine material screening by vibrating feeder are transmitted to the transfer material pile by a belt conveyor.

In The Second Stage:The transmission belt machine will convey stockpile material to the cone crusher for finely broken, and then screened by the circular vibrating screen. Larger particles back to the cone crusher to be broken again; medium grained material is sent into sand making machine for fine crushing and reshaped. Grade qualified materials is the final product after washing by sand washing machine.

In The Third Stage:Medium grain material is sent into the sand making machine for crushing, and then screened by a circular vibration sieve. Larger grain size material is returned to the sand making machine to be broken again. Qualified products are sent to the stockpile storage by the belt conveyor, and fine particles are sent into the sand washing machine to clean.

In The Forth Stage:Material that is sent into the sand washing machine is as part of the final product to be transferred by the conveyor belt to material pile.

YKN SERIES CIRCULAR VIBRATING SCREEN

FEEDSTOCK SIZE : <400mm
THROUGHOUT : 100-850t/h
FIELDS OF APPLICATION :

It is applied into metal mining, construction, coal, cement and solid waste treatment fields and so on.

SUITABLE MATERIALS :

It is suitable for ferrous metal ore, non-ferrous metal ore, limestone, pebble, dolomite, granite, rhyolite, basalt; coal, coke, building waste, coal gangue, and tailings.

YKN series circular vibrating screen is high efficient sieve with high intensity vibration excitation, which is combined with international advanced manufacturing technology as well as based on the twenty years’ shaker design experience of our company.

YKN series circular vibrating screen uses the N series of eccentric vibration exciter, intermediate transmission connected by flexible connection, equipment amplitude is larger, and vibration was stable. The ability of the vibration sieve and screening efficiency are improved, which can ensure the operation of the vibrating screen is more reliable and service life is longer.

PRODUCT ADVANTAGES

Strong Exciting Force And Easy To Adjust

Exciter adopts external eccentric block structure, light weight, strong exciting force. By adjusting the eccentric block number, it can adjust the amplitude and the exciting force of vibration sieve.

Easy Installation And Maintenance

Vibration exciter is directly fixed on the sieve box side. the two vibration exciters are connected through a universal couplings, which is convenient installation and maintenance.

High Strength Of Sieve Box

The sieve box side using the overall bending parts, side plates between the beam and the transverse strut with the ring groove rivet connection, the whole stress is uniform, high strength.

Smooth Operation Of Equipment

The motor is connected with intermediate shaft through the triangle, and the intermediate shaft is connected with the vibrator through the flexible coupling. The whole equipment torque transmission has no axial force, so as to make the equipment more stable.

The Overall Stress More Reasonable

Vibration exciter is directly fixed on the sieve box side and produces the vibration force through the plate center, and uses the finite element analysis technology to optimize the calculation of screen box, so that the screen box side plate and the stress condition are more reasonable.

 

WORKING PRINCIPLE

This series of vibrating screen with eccentric block as the excitation source to drive the sieve box for circular vibrating, its working principle is: the screen box through the elastic support on the base (or base), the eccentric block is mounted on the spindle, the spindle through the bearing and the bearing seat is arranged on the side of the screen box. Motor driven by triangle with intermediate shaft, intermediate shaft drives the rotation of the spindle, spindle rotates to drive an eccentric block to rotate, inertia force of the eccentric block to produce forced vibration sieve box. With the motor running, the approximate circular locus motion vibrating screen, realize continuous screening operation

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TECHNICAL PARAMETER

Version	Specifications of sieve surface （mm）	Layers	Screen size （mm）	Maximum screen size （mm）	Capacity （t/h）	Motor power (kw)	Double amplitude （mm）	Screen angle （°）
2YKN2160	2100×6000	2	6~150	400	100~600	30	7~11	20
3YKN2160	2100×6000	3	6~150	400	100~600	37	7~11	20
4YKN2160	2100×6000	4	6~150	400	100~600	45	7~11	20
2YKN2460	2400×6000	2	6~150	400	150~850	30	7~11	20
3YKN2460	2400×6000	3	6~150	400	150~850	37	7~11	20
4YKN2460	2400×6000	4	6~150	400	150~850	45	7~11	20

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BELT CONVEYER

FEEDSTOCK SIZE : 400-1200mm
THROUGHOUT : 40-480T/h
FIELDS OF APPLICATION : Metal and nonmetal ore
SUITABLE MATERIALS :

It is suitable for crushing materials that compressive strength less than 320mpa (zhao pa)hard and soft ore, such as limestone, dolomite, calcite, barite, talc, calcium carbonate, gypsum, bentonite, glass etc.

Belt conveyor, commonly known as the belt machine, in the industrial production, it is the link between production equipment to ensure the continuity and automation of production processes. In the crushing industry, belt machine produced by our company are widely used for conveying bulk materials or items.

PRODUCT ADVANTAGES

Large Conveying Capacity High Adaptability

Different types of the machine can meet customers’ different requirements for delivery. belt conveyor can be used in the environmental temperature from -20℃ to +40℃. temperature of transportation of material is under the 50 ℃. It has high adaptability.

Standard Parts Repair Convenient
With the standardized production and simple structure, it can be easy to repair.

Non-Slip Design Strong Stability

Aiming at the possible slip between material and belt machine, our company provides a special shaped belt machine to avoid this problem and enhance the stability of belt conveyor.

Diverse Model Flexible Use

According to the requirements of transportation technology, it can be used in single machine, also can be used multiple combinations, or with other equipment to form a horizontal or inclined conveying system.

WORKING PRINCIPLE

Belt conveyer is mainly composed of a machine frame, a conveyer belt, a belt roller, tensioning device, transmission device. The fuselage uses the high quality steel plate. The frame is formed by the height difference between the front and rear legs. The plane was a certain angle. Frame is provided with a belt roller, roller, which is used for driving and supporting conveyor belt. There are two motor types: deceleration motor drive and electric roller drive.

The working principle of belt conveyer is the friction drive principle. According to the transportation process requirements, it can be a single delivery, also can be multiple belt conveyor or with other equipment to form a horizontal or inclined conveying system, to meet the different arrangement of the operation line.

TECHNICAL PARAMETER:

Belt Width (mm)	Conveying Length（m） / Power（kw）			Conveying Speed （m/s）	Output （t/h）
400	≤12/2.2	12-20/2.2-4	20-25/3.5-7.5	1.25-2.0	30-60
500	≤12/3	12-20/3-5.5	20-30/5.5-7.5	1.25-2.0	40-80
650	≤12/4	12-20/4-5.5	20-30/5.5-11	1.25-2.0	80-120
800	≤10/4	10-15/4-5.5	15-30/5.5-15	1.25-2.0	120-200
1000	≤10/5.5	10-20/5.5-11	20-40/11-22	1.25-2.0	200-320
1200	≤10/7.5	10-20/7.5-15	20-40/15-30	1.25-2.0	290-480
1400	≤10/11	10-20/11-22	20-40/22-45	1.25-2.0	400-680
1600	≤10/15	10-20/22-30	20-50/30-75	1.25-2.0	600-1080

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MTW Series Trapezium Mill

Zenith MTW Series trapezium mill

Features of Zenith MTW Series trapezium mill

• Exquisite appearance.
• The whole bevel gear transmission.
• Internal thin oil lubrication system.
• curved duct.
• Curved surface shovel with exchangeable blade.
• Isolated cyclone collector.
• No resistance inlet volute (small observation door without vortex).

Advantages of MTW Series Trapezium Mill

Zenith MTW Series trapezium mill is the latest grinding mill, which is developed by our company’s experts based on 10 years’ R&D on grinding machine. It owns many independent patents property, such as overall prick gear drive, internal thin oil lubrication system, and arc-shaped air duct. All of these make it leading the trend of the milling industry in the world.

MTW series trapezium mill adopt bevel gear integral transmission, inner light-oil lubrication system, arc whirl tube and another proprietary technology. And obtain international advanced technology as well as many proprietary intellectual property rights.

The benefits of Zenith MTW Series trapezium mill for our clients

• Lower investment for the maximum benefits
• More stable performance of the machine
• Large output
• Considerate after-sale service is provided for our clients