Thursday, March 29, 2012

Granite processing plant

Jaw crusher for granite crushing: Jaw Crusher is widely used in granite processing plant. It is suitable for primary and secondary crushing all kinds of mineral ores and rocks with compressive strength less than 320 MPa.

Impact crusher is used for granite primary, secondary, fine crushing plant. It is widely used for sand and rock producing in the industry of roads, railways, reservoir, blasting of rock for processing and so on.

The portable crushing plant is not limited by the crushing place, and reduces high material transportation cost. The portable crushing plant can crush materials on site or work nearly. So, it is widely used in the industry of mining, metallurgy, building materials, traffic, and water conservancy facilities and so on. The portable crushing plant is the best crushing plant for granite stone quarry.

Vibrating screen is the granite screening machine used to screen out the suitable particles size. According to the different size of crushed stones and sands, choose the right screen cloth.
Granite crushing plant

In the granite crushing production lines, we can choose the right granite crushing machine according to the capacity. The granite stone crushing plant could be placed in concrete building or shed or open space. The usual crushing plants are as follows: 30-50tph, 50-80tph, 80-120tph, 120-200tph, 200-300tph, 300-400tph, 400-500tph.

We here recommend three proposals about the granite complete crushing plant:

Proposal 1: vibrating feeder + primary jaw crusher + secondary impact crusher + vibrating screen + belt conveying system + control system

Proposal 2: vibrating feeder + primary jaw crusher + fineness jaw crusher + impact crusher(optional)+ vibrating screen + belt conveying system +control system

Proposal 3: vibrating feeder +primary jaw crushers + cone crusher + fine impact crusher(optional)+ vibrating screen + belt conveying system + control system

In the above proposals, the main difference is the secondary crusher: using impact crusher, or using fineness jaw crusher, or Compound cone crusher. According to the fineness of the finished products, choose the right crushing machine to make up the complete granite crushing plant.
Granite aggregate manufacturing

In the construction aggregate production line, granite is crushed for manufacturing building aggregates and artifical sands.

SBM is a famous granite processing equipment manufacturer in China, and offer mining equipments, crusher, screening machine for granite quarry plant for producing aggregates and sands in USA, India, UAE, Canada, sri lanka, Italia, UK, Afghanistan, Angola.

Friday, March 16, 2012

The widely used Spring Cone Crusher

Spring Cone Crusher is cone crushers which is the earliest appearance in the world, and it is used widest and larger quantity crush mechanism in present. With the improvement of the series of CS cone crusher, their structure is more perfect and the technology parameter is more advanced, so these crushers have excellent performance in the aspects of manufacture, installation, use and maintenance etc.

The Spring Cone Crusher is applicable for crushing various rocks and ores with medium hardness. The Spring Cone Crusher is widely used in metallurgical, construction, utilities, transport, chemicals, building materials industry, for breaking hard, medium hardness of the above various ores and rock, such as iron ores, copper ores, limestone, quartz, granite, gritstone, etc. Type of the crushing cavity is decided by the application of the ores.

During the Spring Cone Crusher is working, the Series of Spring Cone Crusher crushes materials by the working surface between the movable cone and fixed cone. So it is more advanced and efficiency than Jaw Crusher. The movable cone is supported by spherical bearing and fixed on an hanging erect shaft which is set in the eccentric sleeve, and the sleeve is set on the stopping and pushing bearing. The movable cone and erect shaft are driven by the eccentric shaft sleeve together.

The eccentric shaft sleeve is driven by horizontal shaft and fimbriated gear, and the wheel of the conveyor belt is driven by motor through v-belts. The lower part of vertical shaft is installed in the eccentric sleeve. When the eccentric sleeve rotates, there is a conical surface lined out by the shaft. When the movable cone comes near the fixed cone, rocks are grinded into pieces, when the cone leaves, grinded materials is discharged from the discharge hole. The fixed cone can be ascended or descended by adjusting setting to adjust the width of discharge hole, consequently the output size is determined.

What's more, the series of Spring Cone Crusher also has many features and benefits, such as stable structure, high efficiency, easy adjustment, and economical using etc. The spring safety system of crusher acts as an overloading protection system that allows metals to pass through the crushing chamber so as not to damage the Spring Cone Crusher. The safety system uses dry oil and water as two kinds of sealed formation to make plaster powder and engine oil separated to make sure reliable performance.

The installation of Ball Mill

The Ball Mill is and industrial grinding mill, through its installation, the client should pay attention to many things such as the installed base and safety issues.

Installed base:

1.The Ball Mill should be placed on the basis that has the appropriate height from the ground and strong steel concrete.If the foundation is sinking slightly, the level must be balanced.If not, the Ball Mill should not be installed.

2.The barrel of Ball Mill should has a appropriate height from the ground, in order to convenient for the changing of the plate and the grinding mediums and the fastening of the plate screws.

3. The design of the Ball Mill's installed base to some extent could refer to the blueprint that supplied by the manufactures. However, it shouldn't use as a working drawing. During the installation, we should major look at the real installation environment.

Matters need attention through the installation :

1.Before the installation of the Ball Mill, the users should carefully check if the size of Ball Mill's each part fit with the drawing requirements and if the equipments were all in readiness.

2.Before the installation of every element and unit of the Ball Mills, they should have a careful examination. The users must clear up the all kinds of the wounds, protection oil, dust and foul on the surface of the machine, in order to make sure that the machine could running normally.

3.During the installation, the users should daub some thin oil on the sliding surface of the machine. The surface of the regular connection should daub grease.

4.During the installation of the Ball Mill, the users should make a adequate protection of the frication surface and daub the grease on it, meanwhile, users should also put the clean oilskin on the dedicated backplate.

Wednesday, February 1, 2012

South Africa Mining Equipment

One reason with the economic development of South Africa is that lately China has increased investment of many countries in Africa including South Africa, Libya, Algeria, etc. resulting in the introduction of African mining machinery industry. South Africa’s mining machinery industry development has stimulated the infrastructure of the implementation of the basic equipment and construction. During this process, the crushing equipment and grinding equipment will be the key equipments.

SBM can give you mining equipments in South Africa and SBM mining equipment adopts the brand new standards, new developed technology, its main characteristics will be the structure more modest, smooth crushing performance more good, safe and reliable operation, power saving, low noise. SBM South Africa mining equipments include crushers, jaw crusher, mobile crusher, ball mill, stone crushing machine, VSI crushers etc. We may also give you used mining equipment solution for you in mining machinery and construction industry.

South Africa Gold Mining

South Africa taken into account 15% with the world’s gold production in 2002 and 12% in 2005, though the nation had produced as much as 30% of world output even as 1993. Despite declining production, South Africa’s gold exports were valued at $3.8 billion USD in 2005. Almost 50% of the world’s gold reserves are found in South Africa.

Ball mill or ball roller mill in South Africa can be a famous grinding mill or grinder machine used widely in mining industry and ore processing industry. Ball mill is really a cylindrical device utilized to grind or mix materials like ores, chemicals, ceramic garbage and paints. South Africa ball mills rotate around a horizontal axis, partially full of the information to become ground plus the grinding medium. Different materials bring media, including ceramic ball mills, flint pebbles ball mills and stainless ball mills etc.

Grinding mills accessible in South Africa includes ball mill, Raymond mill, vertical mill, trapezium grinding mill of course, if you want to get grinding mill price or grind mill cost, contact us according the internet service for free.

South Africa Grinding Mill

SBM is a grinding machine manufacturer in China, we export grinding mills to South Africa,India,Indonesia,Nigeria etc. Our grinding mill includes Ball mill, Raymond Mill, Vertical mill, Roller Mills…

MTM Trapezium Grinding Mill Introduction

grinding-plant-300x200The MTM Grinding Mill is called MTM Medium Speed Trapezium Mill. It is designed by our own engineers and technical workers basing on our 20 years’ manufacturing experience and absorbing foreign advance technology.

The grinder machine leading powder process in grinding mill industry, it’s pretty widely used in many countries as mining equipment to mill quarry, such as South Africa,  Zimbabwe, Ethiopia, Sri Lanka, Malaysia and plenty of other countries all over the world.

MTW Trapezium Grinding Mill Introduction

MTW Trapezium Grinding Mill is the latest grinding mill with the best technical level in the world; it owns many patented technologies such as internal thin oil lubrication system, arc-shaped air duct, and overall prick gear drive. The MTW Trapezium Grinding Mills are widely used as metallurgical grinding mills and mineral grinding mills all over the world.

Super Thin Grinding Mill Introduction

SCM Super Thin Grinding Mills designed by SBM are used for ultrafine grinding mills that absorb grinding mill technology advantages from abroad and domestic. With decades’ experiences, the SCM super thin grinding mill has reached the international level of ultra-fine grinding mills manufacturing. The output particle of ultrafine dust is so weeny that must be making you very exciting and feel incredible.

Coarse Powder Grinding Mill Introduction

The MXB Coarse Powder Mill is the ideal equipment with high performance and easy maintenance of coarse powder processing. It meets customers’ requirement in industrial mill and industrial grinding areas. The MXB Coarse Powder Mill based on our experts’ many years research experience in the milling industry and combined with practical application and then we have the world-class level in industrial mill and industrial grinding.

High Pressure Grinding Mill Introduction

High Pressure Grinding Mill is a newly kind of highly efficient grinding mill invented by Shibang for many years’ research and development of grinding mill. The patent product of our company is high efficiency and low energy consumption.Customers can have auxiliary equipments by oneself that enough to meet the needs. Crusher

Monday, December 26, 2011

La Guitarra Silver Mine, Mexico

La Guitarra silver mine is situated 130km southwest of Mexico City in the Temascaltepec Mining District. The mining district is 100% owned by Canadian mining company Silvermex Resources and covers an area of 397km2.

The operations of the La Guitarra mine first began in the early 1550s and were ceased in the 19th century due to lack of technology and investment.

The mine was reopened in 1990 by Compania Mineria Arauco with an initial production capacity of 30 tons a day (tpd). Luismin purchased the licensing rights of the mine in 1993 and expanded the production rate to 340tpd.

Genco Resources (thereafter renamed Silvermex Resources) acquired the La Guitarra mine and a 340tpd processing plant from Luismin in August 2003.

The mine was closed in 2009 due to lack of development. Its operations recommenced in April 2010 and achieved its full production capacity of 320tpd in November 2011.

Reserves of gold and silver at the Mexican mine

Proven and probable reserves of the La Guitarra mine stand at 11mt graded at 113g/t Ag and 0.93g/t Au.

Geology of the Temascaltepec mining district

"The mining district is 100% owned by Canadian mining equipment company Silvermex Resources and covers an area of 397km2."

The La Guitarra mine lies in the southeastern end of the Mexican belt. It is situated in the southern part of the Sierra Madre Occidental or the Mid-Eocene Ignimbrite volcanic terrain.

The region is characterised by mafic volcanics of the Trans-Mexican belt superimposing the intermediate to felsic Eocene volcanics.

The mine hosts rocks from Mesozoic schist and slates to Tertiary age volcanics and intrusives. It is understood to have been mineralised due to the late Miocene volcanic disruptions.

Hundreds of epithermal veins cross the property. The veins are classified into four main trends namely El Coloso / Nazareno, La Guitarra, Mina de Agua and El Rincon. These veins are spanned to a strike length of 15km and depth of 4km.

Mineralisation at the La Guitarra silver mine

Mineralisation is hosted in the vein type ore bodies in the form of quartz-monzonite compositions. Silver mineralisation occurs in silver sulphides, acanthite, polybasite, proustite-pyrargyrite, sulfosalts and electrum.

Gold mineralisation contains electrum particles and free gold with oxidation features.

Other minerals include white crystalline quartz, chalcedony, amethyst and adularia, sphalerite, pyrite, fluorite, calcite, chalcopyrite, barite, galena and clay.

Production rates, mining methods and ore processing at La Guitarra

Production at the mine commenced in 1993.

"La Guitarra silver mine is situated 130km southwest of Mexico City in the Temascaltepec Mining District."

The mine produced 57,343t of ore containing 303,847oz of Ag and 3,284oz of Au between January 2011 and September 2011.

The La Guitarra deposit is mined using both open-pit and underground mining techniques. The conventional drilling and blasting is carried out in the open-pit operation. In the underground mining, access to cut and fill stope is provided by adits and ramps.

The development involved three operational pits (Los Angeles, La Cruz and Creston) and four main vein trends.

The stockpiled ore is processed in a concentrating mill having a rated capacity of 340tpd. It is crushed to 12.5mm in three stages by using jaw crushers.

The crushed ore is fed to two stockpiled conveyors for transmission to two grinding mills operating in parallel. The ground ore is carried to two counter current decantation (CCD) thickener circuits to undergo cyanide leaching in agitated tanks and generate pregnant solution.

The pregnant solution is transferred to the standard Merrill-Crowe Zinc Precipitation Circuit to recover silver and gold. The precipitates are fed to smelter to remove the contaminants and produce pure silver and gold dore bars for export.

The barren solution from the precipitation circuit is recirculated to the grinding circuit and CCD thickeners.

Tuesday, December 13, 2011

Sand Making Machinery for Sale in South Africa

In the middle of 2011, South Africa government plan to invest 95.5 billion USD dollars to infrastructure construction. For example, the rail way construction, the road construction, etc. Obviously, these construction projects will consume great many stone aggregates and sands. Great many business chances are created with making this policy. At this time, sand making machine in South Africawill be widely used.

sand-making-machinery-for-sale-300x204

Double Sand Making Machinery for Sale in South Africa

Sand making machines are Double key equipments all the time. In Australia, in Canada, in Spanish and other countries, Double sand making plants can be fond. Till now, we have a few sand making machines shipped to South Africa, but we do believe in the future, great many sand making plants in South Africa with Double products will be built with South Africa infrastructure construction.
The popular Double sand making machines are our VSI series and B series deep rotor vertical shaft impact crusher.

Double VSI sand making machine is used as the tertiary crusher in sand making crushing plant. The crushed sand (0~5mm) is very popular in concrete mixing, building and road construction industry. Also, VSI is widely used in metallic and nonmetallic ore, building material, manufactured sand crushing industries and in aggregates reshaping processing.

Advanced double pump oil lubrication system is used in VSI series sand making machine. This system ensures the machine is able to steadily work even one of the pump breaks down. As a result, the maintenance frequency and the downtime reduce obviously. Meanwhile, this type sand making machine is easy for maintenance because of hydraulic lift cap system.
The latest B series deep rotor vertical shaft impact crusher has many more advantages compared with the traditional VSI sand making machine:
1.Higher capacity: It adopts deep rotor, it is about 50% higher than normal rotor, which means more materials can be fed to the rotor and higher rotor throughput.
2.Longer service life: the deep rotor ensure the material go through the rotor smoothly, as a result, attrition is decreased and the service life of wear parts increase about 30%-50%.
3.Lower production cost: Optimized designs are used in the spare parts, such as segment design of rotor tip, application of diamond impact block and segment design of chamber lining plate.

South Africa sand making plants

One machine can not finish the work. One complete sand making plant consist of various crushers, such as jaw crusher, cone crusher, impact crushers, vibrating screen, etc. Double would like to help you find the best solution and offer the matched equipments matched with our design. In this way, the whole plants can work very well and you will get much more profit from South Africa sand making plants.
If you plan to invest in sand making plants in South Africa, or if you have any problems about the crushing industry, just be free to contact us. You can leave your email, we will answer you within 24 hours; you can also chat with our engineer on-line, this way, you can get many details immediately.