May 04 2011

Kalahari strengthen link with Namibia and Zenith crusher

Category: News — admin @ 2:00 am
Kalahari Minerals plc ‒ which owns 43% of Namibia-focused Extract Resources Limited ‒ has given a re-assurance that it remains confident that its strong relationship with the government of Namibia will continue to bear fruit.

Extract’s main asset is the US$1.659 billion Husab uranium mine, located approximately 45km north-east of Namibia’s main port, Walvis Bay. It has a current resource of 367Mlb, establishing it as the fifth largest global uranium deposit.Consistently high assay results have identified the Husab project as the largest in-situ and highest grade granite-hosted uranium deposit in Namibia, with a current JORC compliant measured and indicated resource for Zones 1 & 2 of 257 Mlbs at a grade of 480 ppm U3O8. It also has a JORC-compliant inferred resource of 110.3Mlb at a grade of 400 ppm from Zones 1,2,3 and 4.

With further drilling scheduled on newly delineated areas, the Board of Kalahari is confident that Extract’s resource base will continue to grow, providing the company with the ground and cover to support multiple mining operations.

“The start of limited production at H is targeted for the end of Q1, 2014. Full ramp-up will probably take 15 months, so we should be producing at an annualised rate of 15Mlbs by late Q3 or early Q4 of 2015,” CEO Jonathan Leslie predicts.

Meanwhile Namibia, the world’s fourth-largest uranium producer, is considering legislative changes to ensure its citizens receive more benefit from the country’s mineral wealth, according to finance minister Saara Kuugongelwa-Amadhila.

Namibia is a minerals deposite and the machines from Zenith are exported to Namibia in large numbers. The crushers and grinders are mainly used in mining uranium and granite. So the granite and uranium crushing plants are popular.
The crushers are jaw crusher,cone crusher,impact crusher and sand making plants.
The grinders are ball mill, roller mill, vertical mill, raymond mill etc.

The crushing plants from Zenith mainly include: aluminum ore crushing line, crushers plants, barite grinding plant, crushing plants, coal crushing plant, stone crusher plants, coal preparation plant, stone crushing plants, gold ore crushing plant, construction aggregate plant,   cement grinding plant, granite crushing plants, aluminum ore crushing line, mineral crushing plants, concrete crushing equipment, crusher in south africa, mineral crusher plants, sand making production line, copper ore crusher and mill, iron ore crusher plant,  track ballast crushing line, complete grinding plant, coal preparation plant, complete cone crusher plant, magnetite ore screening plant, flow chart of a crushing plants, mining and crushing plants,crush plants, magnetite ore screening plant, mobile crushing plants, track ballast crushing line, aggregate crushing plant, aggregate plants, iron ore crushing plant, quarry plant , gold processing plant, washing sand plants, track mounted aggregate plants, complete ball mill grinding unit, complete jaw crusher plant, nickel crush grinding plant, complete mobie crushing plant, gold ore crushing plant, complete granite crusher plant, antimony ore crusher plant, complete crushing plant.

The Zenith crushers and grinders are mainly exported to the universal countries. They are Vietnam, Nigeria, Kenya, Angola, Congo, Sudan, Yemen, Saudi Arabia, , Oman, Kazakhstan, Uzbekistan, Algeria, Chile, Peru, Ecuador, Senegal, Indonesia, zimbabwe, Libya, Mozambique, Colorado, iran, nepal, Russia, Puerto Rico, Iraq, Botswana, Venezuela, US-FL, afghanistan, colombia, MAROC, Algeria, Zambia, Cuba, italy, paraguay, Lebanon, Vanuatu, Mongolia, GEORGIA, Canada, tunisia, Uganda, Namibia, belgium, Lao PDR, australia, SYRIA, bangkok,USA, Poland, Mexico etc.
If you have any interest in mining machinery, contact us. We provide machines in best quality.

Apr 29 2011

Anglo American nickel plans & Zenith Plants

Category: News — admin @ 1:26 am

28 April 2011 – Anglo American plc ‒  the diversified mining giant with about US$70 billion of expansion plans ‒ aims to more than quadruple nickel output this decade to compete better with larger rivals OAO GMK Norilsk Nickel and Vale SA.

The London-based company may produce as much as 180,000t by 2020 as it ramps up output at its Barro Alto project in Brazil and weighs up investing another US$6 billion in two new ventures in the country, Anglo nickel unit CEO Walter De Simoni said in an interview with Reuters.

Global output is expected to climb about 10%, or 163,000t, to 1.83Mt this year, according to Bank of America Corporation,  as the economic recovery boosts metals demand in construction and industry.

“The nickel business is going very well,” De Simoni, a Brazilian national, said on the sidelines of the World Economic Forum conference here. “After the 2008 crisis, the nickel business recovered faster than everybody would have thought and the price now is much stronger.”

Anglo started production at the US$1.9 billion Barro Alto nickel project in Brazil’s Goias state last month, and is aiming for average output of 41,000tpa in the first five years after attaining full capacity in 2012. The company may add a further 112,000tpa from two projects in Brazil ‒ Jacare and Morro Sem Bone ‒ which are yet to be approved and may require about US$6 billion, he said.

Anglo’s current output of 38,700t is dwarfed by that of larger rivals. Norilsk, the world’s biggest producer, said in January that output might rise to as much as 315,000t this year, 5.9 % higher than in 2010. Vale, which aims to overtake Moscow-based Norilsk, plans to reach 295,000t this year, after producing 179,000t in 2010.

Crushing Plant From Zenith

Angola American plc is a mining bussiness company and Zenith is a mining machinery manufacturer in  Shanghai. The plan to increase nickel output take some of Zenith mining equipments for the nickel, iron and silver mining.  The silver ore crushing plant include crushing plants and grinding plants. The iron ore crushing plant consists of jaw crusher as the primary crusher, cone or impact crusher as the secondary crusher. Through the two stages, the nickel ore are in about micro meter. If you want to produce the iron and steel high efficiency, the grinding plants are needed. The grinding plants are mainly vertical ball mill, vertical high pressure mill, etc. The mills can pulverize the materials into smaller and smaller particle size. The mills are divided into coarse, fine, and ultrafine , three types. The type depends on your requirment of iron ore. The nickel crushing plants for Angola American plc are designed sophisticated, a design process different from all other plants. In Zenith, every crushing plants are special, they are for the special local situation and special minerals. Too many possibility and we produce kinds of crushing and grinding plants. An example may be portable crushing. Portable crushing plants are designed for small mine lot, mining waste processing, or individual use, the portable one may be the best choice.

Besides the iron ore plants, Zenith produce series of mining plants for kinds of minerals. The minerals such as nickel, silver, gold, copper, aluminium, zinc ,tin , lead, iron, calcite, limestone, pebble, gravel, clinker, carmic, coal, coke, dolomite etc. For all the minerals, Zenith designs the specialized crushing and grinding plants for them. The specializing can improve the efficience and reduce the cost.

The plants are not only exported to Angola too. The crushers and grinders are exported to more than 100 countries and regions. Many major company purchase our crushing and grinding plants for mining. The mining equipments are in top quality and evironmental. If you are a mining company, individual miner, mining agency, Zenith is the best choice for you .

See also :

broyeur in Cameroon

broyeur industriel

crible vibrant

le concasseur broyeur

le concasseur

Apr 27 2011

cement ball mill plant

Category: Ore Crusher — admin @ 9:23 am

Ball mill for cement processing plant
Cement ball mill

Cement ball mill, is the key part of  cement mill, cement clinker mill, is the key equipment for grinding cement clinker, gypsum, limestone, clay, coal after crushing process. This is essentially a large rotating drum containing grinding media – normally steel balls. As the drum rotates, the motion of the balls crushes the clinker. The drum rotates approximately once every couple of seconds.
Grinding systems are either ‘open circuit’ or ‘closed circuit.’ In an open circuit system, the feed rate of incoming clinker is adjusted to achieve the desired fineness of the product. In a closed circuit system, coarse particles are separated from the finer product and returned for further grinding. Systems have been installed on Cement clinker, blast furnace slag, calcined alumina, calcium carbonate. Dry ball mills are effective grinding systems in the general range of 500 microns down to 5 microns.
Cement ball mill structure

Cement Mill is composed of feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbling process and the drum is equipped with wear-resistant liner, which can increase mill productivity, reduce mill power consumption. The machine is with stable and reliable working condition. Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice.
Cement production line

Limestone of differing chemical composition is the major resource to produce cement. Limestone is carefully blended before being crushed to provide consistent chemical composition. Once these materials have been crushed, this raw material will be transferred to the raw material grinding mills. To continue Portland cement clinker is a dark grey nodular material made by heating ground limestone and clay at a temperature of about 1400 C-1500 C. The nodules are ground up to a fine powder to produce cement, with a small amount of gypsum added to control the setting properties.
Transport belt conveyor transfers the blended raw materials to hammer and ball mills where it is ground. Then the raw materials go through rotary kiln, and cement clinker will be produced.
The dry process kiln is shorter than the wet process kiln and is the most fuel-efficient method of cement production available.
In the cooler unit, the cement clinker will be transported to closed storage areas.
Different types of cement are produced by mixing and weighing proportionally the following constituents: Clinker, Gypsum, Limestone, Blast Furnace Slag. These materials are ground in cement mill and then stored in large silos. Careful quality control ensures consistent high performance of the product produced.

Apr 27 2011

coal crushing plant

Category: Ore Crusher — admin @ 7:16 am

Coal Crushing Plant

Coal crushing plant working process

Coal crushing can be divided into two categories according to their position in the production system such as crushing preparations and finally crushing. Crushing preparations work for the next operational requirements of the particle size for crushing operations; finally broken coal is broken to the required size of the operation of commercial coal. Coal crushing commonly used mechanical method. In a variety of crushing machines of coal, we often dominated by a kind of broken way, accompanied by other fragmentation methods.

Which coal crusher are used in the coal crushing plant depending on the physical and mechanical properties of materials, particle size and the requirements of broken than to decide.

There are two coal crushing operation systems: open systems and closed-circuit crushing system. Open crushing system is used on the product’s size is not strictly required, or crushed when the situation does not produce too large, while closed-circuit crushing system called loop crushed system, broken product for less than the specified size must be strictly guaranteed, while the crusher machine itself cannot meet this requirement of the situation. Crushed in the closed-loop system, the crushed product to check through the screen, screen then return to the coal crusher, until through the screen so far.

Coal crushing plant mainly includes many coal equipments. From Zenith you can get coal crusher and coal mill.

Jaw crusher is the most commonly used coal crusher machine in coal handling process. According to our experience, we know that jaw crusher is applied for the content of large waste rock hard or brown coal of the broken iron. As a primary crusher of coal crushing plant, Zenith jaw crusher can reach the crushing ratio of 4-6 and the shape of final product is even. Its widely applied to crush high hardness, mid hardness and soft rocks and ores such as slag, construction materials, and coal ore and so on. According to its features and working principle, choosing Zenith jaw crusher for coal crushing plant is the right choice.

Depending on the characteristics of coal, many stone crushers can be used in coal crushing plant. JC series jaw crusher is a upgrade of jaw crusher, impact crusher crushes materials with impact force. And other crushers are crushed for coal such as spring cone crusher, s cone crusher, hydraulic cone crusher, vertical shaft impact crusher and so on. Also, some of our new type mobile crusher station can be used for coal crushing process. Large coal enterprises attach much importance to crushers capacity, quality, maintenance and the cost-effectiveness in the long term. Zenith crawler type mobile crusher minimizes the equipment downtime and integrates the coal conveying and crushing, thus greatly reduces the use cost. It is favored by large coal enterprises, especially coal mine, as it meets their requirements for high capacity and efficiency processing of the coal.

Coal crusher or crushing machine application in coal processing company

1. Meet the requirements of coal particle size selected. Featured the coal machine can handle a certain size range, over the range of large to go through a break before washing.

2. Some coal is a mixture of coal and waste rock symbiotic parting of coal, in order to choose the coal that needs to be broken into smaller particle size, separation of coal and waste rock. The most common case is to be elected in the primary election machine coal crushed to 13mm or 6mm following, and then sent to re-elect re-election machine.

3. Size to meet user requirements, the products or coal broken after the election to a certain size. According to the product size broken, broken job can be divided into coarse pieces (the crushing to 50mm and above), in pieces (broken into 25-6mm), small and fragmented (broken into 6-1mm), crushed (1mm or less).

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