Superiority and application range
The spiral concentrator is the optimum
equipment for mining and mineral processing. Especially for the placer mining in
the seaside, river, sand beach and brook, the spiral chute is more desirable.
The spiral chute separator has
the advantages of light weight, moisture-proof, antirust, corrosion-resistant,
strong adaptability to the feeding and the fluctuations in concentration,
particle size and grade, no noise and so on.
This equipment applies to the
sorting of fine minerals whose particle size is from 0.3 - 0.02 mm such as iron
ore, ilmenite, chromite, pyrite, zircon, rutile, monazite, tungsten ore, tin,
niobium ore as well as other non-ferrous metals with differences in the
proportion, rare metals and non-metallic minerals. In addition, the spiral chute
is easy to operate with stable sorting process, the allowed changing range of
feeding concentration is wide, the water consumption is low and other
advantages.
Advantages
1.The gravity spiral chute has
reasonable structure, simple installation and small floor space.
2.Easy
operation, stable ore
beneficiation , clear processing and large throughput.
3.High
efficiency, high beneficiation enrichment, high recovery rate and reliable
operation.
Structural features
The spiral chute separator is assembled by
the screw blade which is made of glass fiber reinforced plastic. The inner
surface of the blade is equipped with resistant lining that is made of urethanes
or the epoxy resin mixed emery. Spiral chute is supported on a metal structure
shelve. Above it, there are mineral separation machine and receiving shaft,
while the products interception machine and the receiving shaft are on the lower
part. According to the different needs of the processing amount, the spiral
chute unit can be made into different layers, namely the single head structure,
double head structure and so on to meet the various requirements of the users.
2013年5月5日星期日
2013年5月3日星期五
Cone Breaker/Ore Crusher
The cone breaker is suitable for the crushing of various minerals and rocks
whose compression strength are not more than 250Mpa as well as the materials
with medium hardness. In addition, it is also applicable to the crushing of raw
materials in the industries of metallurgy, construction, road building, chemical
and silicate, especially for the secondary crushing and fine crushing of the
ores and rocks in the small and medium-sized dressing plants. The series of cone crusher has
high production capacity, long service life of the tooth plate, low energy
consumption and uniform granularity of the products. It possess a higher
production capacity, best product shape and greatest reliability and flexibility
and it is easy to automatic control, creating more value for the
users.
Layout design
The cavity shape of the cone breaker is a kind of working space formed by the crushing wall (dynamic cone) and rolling wall (fixed cone). The design of the cavity has a significant impact on the economic and technical indicators of the cone crusher (productivity, energy consumption, the grain size of the products broken, grain shape and the wear of the crushing wall and rolling wall). This unique design makes the granularity of the final products even and appear cube shape and the wear of the dynamic cone work surface more uniform.
The operating parameters of the ore crusher has a direct impact on the motion characteristics of granular materials in the crushing cavity,which can be mainly manifested by the impact on the motion state of the granular material left by the swing speed of the spindle. And then the work performance of the crusher (productivity and granularity distribution of the broken product etc.) will be affected.
Advantages
1, large crushing ratio, high production efficiency, simple maintenance, easy to use;
2, less consumption of the wearing parts, low running costs;
3, excellent granularity of the finished products, high degree of automation, short downtime;
4, rare lubrication, reliable and advanced, long service life;
5, a variety of crushing cavity, flexible application, strong adaptability.
Layout design
The cavity shape of the cone breaker is a kind of working space formed by the crushing wall (dynamic cone) and rolling wall (fixed cone). The design of the cavity has a significant impact on the economic and technical indicators of the cone crusher (productivity, energy consumption, the grain size of the products broken, grain shape and the wear of the crushing wall and rolling wall). This unique design makes the granularity of the final products even and appear cube shape and the wear of the dynamic cone work surface more uniform.
The operating parameters of the ore crusher has a direct impact on the motion characteristics of granular materials in the crushing cavity,which can be mainly manifested by the impact on the motion state of the granular material left by the swing speed of the spindle. And then the work performance of the crusher (productivity and granularity distribution of the broken product etc.) will be affected.
Advantages
1, large crushing ratio, high production efficiency, simple maintenance, easy to use;
2, less consumption of the wearing parts, low running costs;
3, excellent granularity of the finished products, high degree of automation, short downtime;
4, rare lubrication, reliable and advanced, long service life;
5, a variety of crushing cavity, flexible application, strong adaptability.
2013年5月2日星期四
The Influence Caused by the Overdosage of Flotation Reagents
In the flotation process, the hazards of overdosage of the flotation reagents is
often easily overlooked. It is proved that the decrease of the flotation index
is mainly caused by the excessive dosage of the flotation reagents. The hazards
of the overdosage mainly includes the following aspects.
The harmfulness of excessive collector: A. It will destroy the selectivity of the flotation process. Tests and production practices have proved that when the collector dosage exceeds a certain range, the concentrate grade will be significantly decreased. B. The excessive collector will bring difficulties for the further selection of foam concentrate and the separation of the mixed concentrate. C. The excessive collector allows the decline of floatability of certain minerals. D. The excessive collector also results in the formation of large amount of foams, which will make it difficult for the dehydration of concentrates and tailings and bring difficulty for the concentrate and filter.
The hazards of excessive inhibitors. When the inhibitor is excessive, the mineral to be floating and the mineral to be suppressed may also be suppressed at the same time, resulting in lower recovery. In this case, in order to increase the floating ability of the floating mineral, it must increase the dosage of the collector.
the hazards of excessive activator. It will not only destroy the selectivity of the flotation process, but also result in the action with collectors to form the sediment, consuming large amounts of collectors. For example, when the operators conduct the activation of sphalerite, if the copper sulfate is excessive, the copper ions in the slurry and the xanthate will generate the xanthan copper sediment, causing the unnecessary increase in consumption.
The hazards of the excessive foaming agents. It will generate a lot of sticky, fine bubbles, which will make the gangue minerals adhere to the bubbles, affecting the concentrate grade.
The strict control of the flotation reagent dosage is an important factor to improve the flotation indicators of flotation separator . The excessive dosage will destroy the selectivity of the flotation process and increase the processing costs and directly or indirectly, bring the difficulties for the adjustment of the flotation process.
The harmfulness of excessive collector: A. It will destroy the selectivity of the flotation process. Tests and production practices have proved that when the collector dosage exceeds a certain range, the concentrate grade will be significantly decreased. B. The excessive collector will bring difficulties for the further selection of foam concentrate and the separation of the mixed concentrate. C. The excessive collector allows the decline of floatability of certain minerals. D. The excessive collector also results in the formation of large amount of foams, which will make it difficult for the dehydration of concentrates and tailings and bring difficulty for the concentrate and filter.
The hazards of excessive inhibitors. When the inhibitor is excessive, the mineral to be floating and the mineral to be suppressed may also be suppressed at the same time, resulting in lower recovery. In this case, in order to increase the floating ability of the floating mineral, it must increase the dosage of the collector.
the hazards of excessive activator. It will not only destroy the selectivity of the flotation process, but also result in the action with collectors to form the sediment, consuming large amounts of collectors. For example, when the operators conduct the activation of sphalerite, if the copper sulfate is excessive, the copper ions in the slurry and the xanthate will generate the xanthan copper sediment, causing the unnecessary increase in consumption.
The hazards of the excessive foaming agents. It will generate a lot of sticky, fine bubbles, which will make the gangue minerals adhere to the bubbles, affecting the concentrate grade.
The strict control of the flotation reagent dosage is an important factor to improve the flotation indicators of flotation separator . The excessive dosage will destroy the selectivity of the flotation process and increase the processing costs and directly or indirectly, bring the difficulties for the adjustment of the flotation process.
2013年4月26日星期五
Two Ways to Control the Air Quantity of Draught Fan
(1) the working principle of adjusting the air quantity of the draught fan of
industrial drying machine: when the draught fan is working in the ventilation
network, the actual air volume is equal to the flow of air in the ventilation
network and the pressure is equal to the resistance of the ventilation network.
The fan performance curve depicts the variation of the air flow and pressure of
the fan. The ventilation network characteristic refers to the relationship
between the air flow and the resistance of the ventilation network.
When the drying equipment is used to dry the materials, the working conditions of the draught fan need to be adjusted according to production requirements, namely, to change the location of the operating point of the fan to make the output of the air volume keep balance with the actual needs of the air volume. The following is the two ways to control the air quantity.
the throttle regulation: it means that the throttle valve should be installed in the exhaust pipe of the fan in the industrial dryer. According to actual needs, changing the opening degree of the throttle valve will change the characteristics of the pipe to regulate air flow.
(2) the adjustment of the rotational speed: as for the fan itself, it is more economical without additional energy loss when changing the rotational speed of the draught fan. However, it is necessary to use the motor to adjust the speed when changing the fan speed, which will need to add speed control device. In addition, the greater the power of the motor is, the higher the cost will be.
When the drying equipment is used to dry the materials, the working conditions of the draught fan need to be adjusted according to production requirements, namely, to change the location of the operating point of the fan to make the output of the air volume keep balance with the actual needs of the air volume. The following is the two ways to control the air quantity.
the throttle regulation: it means that the throttle valve should be installed in the exhaust pipe of the fan in the industrial dryer. According to actual needs, changing the opening degree of the throttle valve will change the characteristics of the pipe to regulate air flow.
(2) the adjustment of the rotational speed: as for the fan itself, it is more economical without additional energy loss when changing the rotational speed of the draught fan. However, it is necessary to use the motor to adjust the speed when changing the fan speed, which will need to add speed control device. In addition, the greater the power of the motor is, the higher the cost will be.
2013年4月24日星期三
Milling Equipment
Main structure
The milling equipment is mainly composed of the host, analyzer, blower, cyclone separator and other parts. Milling equipment is mainly applied in the sectors of building materials, chemicals, fertilizer, metallurgy, mining, refractory, ceramic, steel, thermal power, coal and other industries for the grinding of the materials whose Mohs hardness is below 9 and humidity is less than 6%. The fineness of the finished product can be adjusted from 30 mesh to 400 mesh.
Working principle
When the grinding mill is in operation, the materials to be pulverized will be sent to the machine from the side of the casing and the materials will revolve around the vertical axis by relying on the roller device hanging on the rack. Due to the centrifugal force generated by the rotation, the grinding rollers swing out to press against the grinding ring so that the materials are sent to the gap between the grinding roller and grinding ring, achieving the purpose of grinding.
Points need attention
When the milling equipment is in operation, it is important to ensure the safety of production. If there were unusual noise or sudden increase of the load of any parts, the operators should immediately stop the machine for inspection and troubleshooting in order to avoid the major accident. If there is the need to start the machine again, the oddments in the milling machine should be removed. Otherwise, the power current is too large, affecting the startup of the machine.
The milling equipment is mainly composed of the host, analyzer, blower, cyclone separator and other parts. Milling equipment is mainly applied in the sectors of building materials, chemicals, fertilizer, metallurgy, mining, refractory, ceramic, steel, thermal power, coal and other industries for the grinding of the materials whose Mohs hardness is below 9 and humidity is less than 6%. The fineness of the finished product can be adjusted from 30 mesh to 400 mesh.
Working principle
When the grinding mill is in operation, the materials to be pulverized will be sent to the machine from the side of the casing and the materials will revolve around the vertical axis by relying on the roller device hanging on the rack. Due to the centrifugal force generated by the rotation, the grinding rollers swing out to press against the grinding ring so that the materials are sent to the gap between the grinding roller and grinding ring, achieving the purpose of grinding.
Points need attention
When the milling equipment is in operation, it is important to ensure the safety of production. If there were unusual noise or sudden increase of the load of any parts, the operators should immediately stop the machine for inspection and troubleshooting in order to avoid the major accident. If there is the need to start the machine again, the oddments in the milling machine should be removed. Otherwise, the power current is too large, affecting the startup of the machine.
Rotary Screen/ Rotary Separator/ Rotary Sieve
The rotary screen is used for
the screening of fine materials and the powdery materials, having high screening
capacity. It is widely used in metallurgy, chemical industry, abrasives, glass,
ceramics, construction, light industry, food and other
industries.
Superiority
The rotary separator is featured with the superiority of high efficiency, high utilization rate of screen, less clogging, simple structure, small size, light weight, fully enclosed structure, no dust pollution and easy installation. In addition, the small horizontal distance between the feeding inlet and discharging port makes it convenient to arrange the layout of the screening machinery. It can be applied to the screening of various kinds of materials.
1, wide adaptability of materials: rotary screen can be widely used for the screening of various materials such as the coal slime, soot and other materials.
2, simple feeding: the feeding inlet can be designed in accordance with the actual situation and the smooth feeding can be guaranteed without special measures.
3, large screening capacity: the circle area of the rotary sieve is larger than that of other types under the same size so that the effective screening area is larger, which helps the materials to contact with the sieve fully, thus improving the screening capacity.
Structural performance
The rotary sieve is composed of the base, housing, motor and other parts. It adopts the cylindrical mesh structure and the materials in the barrel are constantly stirred, forming the constant updates and advancement of materials. The machine can achieve satisfactory results for the screening of the materials with large viscosity and large mesh.
Superiority
The rotary separator is featured with the superiority of high efficiency, high utilization rate of screen, less clogging, simple structure, small size, light weight, fully enclosed structure, no dust pollution and easy installation. In addition, the small horizontal distance between the feeding inlet and discharging port makes it convenient to arrange the layout of the screening machinery. It can be applied to the screening of various kinds of materials.
1, wide adaptability of materials: rotary screen can be widely used for the screening of various materials such as the coal slime, soot and other materials.
2, simple feeding: the feeding inlet can be designed in accordance with the actual situation and the smooth feeding can be guaranteed without special measures.
3, large screening capacity: the circle area of the rotary sieve is larger than that of other types under the same size so that the effective screening area is larger, which helps the materials to contact with the sieve fully, thus improving the screening capacity.
Structural performance
The rotary sieve is composed of the base, housing, motor and other parts. It adopts the cylindrical mesh structure and the materials in the barrel are constantly stirred, forming the constant updates and advancement of materials. The machine can achieve satisfactory results for the screening of the materials with large viscosity and large mesh.
2013年4月23日星期二
Impact Pulverizer/ Rock Impact Crusher
Impact Pulverizer/ rock impact crusher
Impact pulverizer is a new kind of high-efficiency crushing equipment with selective crushing effect,which has promising prospect. The rock impact crusher can resist compression and it is widely used in building materials, transportation, energy, cement, mining, chemical and other industries for crushing materials.
Advantages
1) simple structure, small size, light weight, large capacity, low production costs;
2) ore is crushed along the joint plane, which guarantees the less power consumption and high efficiency;
3) it has the selective crushing role and the granularity of the crushed product is more uniform;
4) large crushing ratio simplifies the crushing process and reduces the cost of the dressing plant;
5) the gap between the back plate and plate hammer can be easily adjusted to realize the effective control of the particle size and particle shape.
Working principle
The impact pulverizer is the crushing machine that makes use of the impact force to crush the materials. When the rock impact crusher is in operation, driven by the motor, the rotor will be in high-speed rotation. The materials will impact against the hammer on the rotor after they enter the operation area of the hammer and then the materials will be re-crushed by being thrown on the counterattack device. This process is repeated until the materials are broken to the desired particle size and then the materials will be discharged from the discharging port. In addition, the adjustment of the gap between the frame and the rotor can change the discharging granularity and the material shape.
Impact pulverizer is a new kind of high-efficiency crushing equipment with selective crushing effect,which has promising prospect. The rock impact crusher can resist compression and it is widely used in building materials, transportation, energy, cement, mining, chemical and other industries for crushing materials.
Advantages
1) simple structure, small size, light weight, large capacity, low production costs;
2) ore is crushed along the joint plane, which guarantees the less power consumption and high efficiency;
3) it has the selective crushing role and the granularity of the crushed product is more uniform;
4) large crushing ratio simplifies the crushing process and reduces the cost of the dressing plant;
5) the gap between the back plate and plate hammer can be easily adjusted to realize the effective control of the particle size and particle shape.
Working principle
The impact pulverizer is the crushing machine that makes use of the impact force to crush the materials. When the rock impact crusher is in operation, driven by the motor, the rotor will be in high-speed rotation. The materials will impact against the hammer on the rotor after they enter the operation area of the hammer and then the materials will be re-crushed by being thrown on the counterattack device. This process is repeated until the materials are broken to the desired particle size and then the materials will be discharged from the discharging port. In addition, the adjustment of the gap between the frame and the rotor can change the discharging granularity and the material shape.
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