Cerro De Maimon Copper and Gold Mine, Dominican Republic

Cerro De Maimon Copper and Gold Mine is located 70km northwest of Santo Domingo in the Monseñor Nouel Province in the Dominican Republic. The mine is 100% owned and operated by Australian company Perilya.

It was initially owned by Falconbridge Dominicana and was later acquired by the GlobeStar Mining Corporation (GMC) in April 2002. Perilya acquired GMC in January 2011.

Pincock Allen and Holt (PAH) was contracted in August 2003 to conduct feasibility study for the mine. The environmental licence was sanctioned in June 2004. Construction of the mine began in December 2006 and was completed in October 2008.

Feasibility studies to develop an underground mine and commission a separate zinc circuit are scheduled for completion in 2012.

Reserves of copper and gold

Proven and probable reserves at the Cerro De Maimon mine's sulphide ore stand at 5.3 million tons (mt) graded at 2.2% Cu, 0.85g/t Au and 27.6g/t Ag. The mine's oxide ore contains 901,000t of proven and probable reserves graded at 1.58g/t Au and 26.9g/t Ag.

Measured and indicated resources (sulphide and oxide ore) of the mine stand at 10.19mt graded at 1.44% Cu, 0.8g/t Au, 23.8g/t Ag and 0.99% Zn. The inferred resources are estimated at 379,000t graded at 0.82% Cu, 0.7g/t Au, 21.1g/t Ag and 0.87% Zn.

Geology of the Monseñor Nouel Province

"Cerro De Maimon Copper and Gold Mine is located northwest of Santo Domingo, Monseñor Nouel Province, Dominican Republic." SBM can supply you gold mining machinery for processing gold mineral resources. Gold mining machinery mainly includes gold crusher, gold mill, gold feeder, gold vibrating screen, gold belt conveyor etc.

The Cerro De Maimon is the largest volcanic massive sulphide deposit in the Maimon Formation which trends 70km along northwest to southeast of Dominican Republic.

The Maimon Formation contains metavolcanic and metasedimentary rocks including mafic, intermediate and felsic volcanic rocks belonging to the early Cretaceous age.

The deposits at the mine comprise massive to semi-massive copper-gold-zinc sulphide zone, overlaid by gold-silver oxidised gossan cap. They are 200m wide, 1000m long and 40m thick near surface.

The average thickness of the deposit is 12m. The massive sulphide zone is formed due to the venting and precipitation of the hydrothermal fluids on the seafloor, in the Caribbean volcanic island arc.

The oxidised gossan cap is formed due to the weathering of massive sulphide zone.

Mineralisation and production at Cerro De Maimon

Mineralisation at the massive sulphide zone occurs in the schists of pyrite, chalcopyrite, sphalerite, bornite, tennantite, tetrahedrite and galena.

The oxidised gossan cap contains goethite bearing gold and silver precipitates along with quartz, sericite, chlorite, minor calcite, barite, chalcocite and covellite.

Production at the Cerro De Maimon mine began in 2008. The mine produced 20.168 million pounds of Cu, 15,900oz of Au and 652,200oz of Ag in 2010. It is expected to produce 229 million pounds of Cu, 130,000oz of Au and 4.1moz of Ag between 2008 and 2017.

Open-pit mining and processing of ore at the Cerro De Maimon copper and gold mine

The deposits are mined using conventional open-pit excavation methods including drilling, exploring, blasting, loading and hauling. Hydraulic excavators, articulated and rigid body trucks are used to carry out mining operations.

"It was initially owned by Falconbridge Dominicana and was later acquired by the GlobeStar Mining Corporation (GMC) in April 2002."

The ore extracted is transferred to the appropriate sulphide or oxide ore stockpiles for processing.

Lyntek Engineers and Constructors was contracted in October 2004 to design and build two separate processing plants for treating sulphide and oxide ores. Both plants share the same crushing and conveying system.

The sulphide ore is passed through a 1,300 tons per day (tpd) flotation circuit and subsequently to a re-cleaner flotation column. The ore is grounded to 150 microns in the primary ball mill, which transfer the ground ore to secondary regrind mill for further grounding to 35 microns.

The ground ore is thickened and filtered in the flotation column to decrease the final moisture of the concentrate. It is finally transported to smelters.

The run of mine ore extracted from the gossan zone is ground in a ball mill circuit. The ground ore is conveyed to a conventional 700tpd cyanide mill to undergo cyanide leaching in a counter current decantation (CCD) circuit.

A gravity separation circuit receives the solution from CCD circuit and removes coarse grains and sulphides. The filtered solution is transferred to the Merrill-Crowe zinc precipitation circuit which recovers gold and silver dore bars for export.

Transportation and handling

The copper, gold and silver concentrates are loaded into haul trucks and transferred to the port of Rio Haina situated on the southern coast of the Dominican Republic for exportation to international customers.

Applications in Metallurgical Industry

In cement production process, most of the medium hard raw materials such as limestone, clay, iron ore and coal should be crushed .And we  have a wide range of choices of crushers such as Jaw crusher, Heavy hammer crusher, Impact crusher and Rolling crusher. Among the materials, limestone is the main one and it features big size and high hardness. So crushing limestone is more important in the cement production line.

General cement production line :  Vibrating feeder - Jaw Crushers - Impact Crusher - Vibrating Screen.-Mill or Vibrating feeder – Heavy hammer crusher - Vibrating Screen.-Mill. And the combination of the machines changes according to customers’ demands. For example，If they need to produce cement more than 2000t one day (10 working hours) .

They can choose these production lines(mining equipments):
JSZSW3890 vibrating feeder---JSPE600×900Jaw crusher---1400 heavy hammer crusher--- JSYZ1450 vibrating screen---Mill(Capacity ≥200t/h)
JSZSW4911vibrating feeder---JSPE750×1060Jaw crusher---1315Impact crusher--- JSYZ2070 vibrating screen---Mill(Capacity ≥200t/h)

Application in Metallurgical Industry

Mobile asphalt plant

The mobile crusher asphalt equipment in a single process unit thus eliminating process heat loss due to material transportation. The asphalt minerals also benefit from the conducted heat from the drum shell thus effecting further savings.

Features of mobile asphalt mining equipment

1. Modern Wet Mix Macadam Technology.
2. Produces High Quality Mix.
3. Portable or Stationary.
4. High Production Rate.
5. Easy to Operate.
6. Highly Accurate Aggregate & Additives Feeder.
7. Manufactured as per MORTH Specification.
8. All components used in the plant are of top quality, with ISI Certification wherever available.
9. All moving parts and electrical parts of wet mix plant are provided with safety covers.
10. Ease of Lubrication and dismantling has been built into the design for efficient maintenance and repair.
12. Manufacturing is done with advance, internationally recognized techniques.

Mobile asphalt mixing machine

This kind of mobile asphalt mixing plants and equipments is widely used for producing asphalts, known as a type of industrial materials that do play an essential role in nowadays construction and maintenance work of asphalt roads.

We are always working to provide you with latest technology and world class standard mobile asphalt mixing machine. our asphalt mixing plants & equipments has been acclaimed worldwide. Totally dedicated to full customer satisfaction we strive for the best in terms of sales and service.

Complete quartz beneficiation production line

Quartz is rather hard, 7 on the Moh’s solidity scale, and has a glassy (vitreous) luster. Due to its actual and chemical features, it is widely found in our ordinary life, to produce the quartz products, the quartz/silica crushing unit and quartz/silica grinding machines are very important.

Quartz grinding mill

Based on our experiences, a great many customers would like to produce quartz sand, OK, there is no issue, the tertiary crusher VSI yellow sand making machine is competent to the work.

Also, our MTM grinding generators, XZM grinding machines in addition to LM and ball mills are widely used in the quartz farming industries.

Here, Shanghai DOUBLE Company,as one of the top professional quartz crushers and grinder machine manufacturer, will supply the best solution, suitable equipments and good after-service.

Quartz mining equipment

Your Moh’s hardness of quartz is around 7 and it sits to hard material. Because of its solidity, usually the quartz crusher follow jaw crusher, impact crusher and mobile crusher inside quartz crushing plant along with adopt ball mill, MTW grinding mill, MTW grinding mill and LM series quartz running machine in quartz mincing plant. In quartz dressing place contain spiral classifier, flotation machines, filter, concentrator and dryer.

To one complete quartz beneficiation production line,it may contain all of the machines.The final equipments configuration depends the practical demands and the design.

find ideal quartz crushing and grinding equipments

Certainly, the best solution bases on your practical demands, so don’t be hesitate to contact us and share your emails with us, you will find your ideal quartz crushers and grinding equipments here.

Telsmith Portable Plant Offers a Low Cost Alternative

Telsmith, Inc., an Astec company, recently introduced the H2550-PP-VGF portable plant, offering a low cost alternative to track mobile crushing plants. When constant on-site track mobility is not required, the H2550-PP-VGF allows the portable contractor to meet production requirements with lower mobilization and operating costs, as well as, lower capital cost. SBM can supply you Raymond mill, portable crusher plant, etc.

When equipped with diesel power and hydraulic leveling, the self contained H2550-PP-VGF can go into production within 30 minutes of arriving on-site.

The H2550-PP-VGF offers several benefits over the track mobile approach:

• Low Mobilization Costs: With a compact design, the H2550-PP-VGF is easily towed from job site to job site without the need for special trailers.
• Quick Start-up: Tthe self contained portable can begin production within 30 minutes of arrival at the site.
• Low Operating Costs: No tracks or track power systems to purchase and maintain.
• Improved Maintenance Access: The open design provides improved access to maintenance areas including conveyor, engine, drives, etc., plus easy access under the plant for cleanup.

Equipped with a 9-1/2 yd3 dump hopper, quarry duty 48” x 16’ grizzly feeder and Hydra-Jaw H2550 jaw crusher, the new portable crusher plant is designed to perform reliably in recycled concrete, quarry stone or sand & gravel applications. The on-board 48” wide, end discharge conveyor incorporates 5” CEMA “C” idlers, 3-ply belting, belt scraper and 30 Hp hydraulic drive. When applied in a typical sand & gravel application, overall plant production is capable of exceeding 500 tph.

The Hydra-Jaw custom hydraulic toggle provides hydraulic adjust, relief and chamber clearing to improve efficiency and up-time availability.

The advanced H2550 Hydra-Jaw is the latest development in a long line of proven Telsmith jaw crushers. Incorporating a custom designed hydraulic toggle, the Hydra-Jaw delivers greater up-time availability while yielding lower operating costs. Just as the modern cone crusher uses hydraulic adjustment, tramp iron relief and chamber clearing to achieve greater efficiency, so too does the Hydra-Jaw.

• Hyd. Adjustment changes the setting in moments, eliminating up to an hour of maintenance time for each setting adjustment
• Hyd. Relief protects parts from failure when tramp iron passes through the crusher, saving thousands of dollars and eliminating extended repair downtime with each occurrence.
• Hyd. Chamber Clearing clears the crusher of stone in as little as 15 minutes, eliminating extensive downtime and loss of production. Instead of spending a shift digging out the crusher, an operator can use wireless controls to clear the crusher from a remote location.

  
  Using wireless controls, an operator can engage the chamber clearing system from inside the loader cab, clearing the crusher in minutes.

When equipped for self contained operation, the H2550-PP-VGF is powered by an on-board CAT, C7, 275 Hp diesel engine with 100 gallon fuel tank (an optional all electric plant option is available including electric motors, starters and wiring). A hydraulic clutch engages the crusher drive while engine mounted hydraulic pumps provide power to the vibrating feeder, conveyor and other optional items. Simple on-board push button controls are standard.

The optional wireless controller provides remote control for E-stop, individual equipment on/off buttons and hydraulic chamber clearing control. This allows the loader operator to clear the crusher, without leaving the cab, and get back into production in minutes.

Coal processing equipments in South Africa

South Africa is not only rich in metal mining, but also rich in the nonmetal mining resources. For example, the coal reserve is the seventh of the world. Now South Africa is one the chief coal production countries, it is the fourth largest exporting country of coal and it is also the leader production country of liquid fuel made of coal. So coal crusher for sale in South Africa has big market. With more investors focus on the South Africa coal industry, Double has won more and more gaze from these investors.

Coal Processing Equipment

South Africa coal processing equipments offered by Double are mainly jaw crusher, impact crusher, hammer crusher, ball mill and LM series grinding mills and feeder, screens and belt conveyors, etc. Many producers produce coal aggregates, the coal crushing plants are able to satisfy their requirements. Many producers produce coal powders or process coal ash; in this case, the coal grinding machineries are very important.

Coal crusher plants

The commonly process of coal crusher plants in South Africa are similar with each other. Jaw crushers crush big coal lumps to small ones when they dig out from well or from deposits. It is really a easy work for Double jaw crusher. Actually, Double jaw crushers can be used to crush numerous mining ores and different stones, such as granite, marble, basalt, gravels, limestone, gypsum, clay, manganese ore, chrome ore, iron ore, gold ore, copper ore and zinc ore and so on. As to the impact crushers, if the raw coal size is not very big, they can crush the lumps to small particles directly; if the raw coal size is big, impact crushers are used behind the jaw crushers. Though the application of impact crushers is wide, but impact crushers should used in crushing soft materials. If the coal deposit is small and producers just want to build one small coal production line in South Africa, Double hammer crushers are really good choices. Also, the output size of hammer crusher is quite small and adjustable, no other better machines are better than them in this function.

Coal grinding process

In the coal grinding process, ball mill and LM series grinding mills  are widely used. It is well-known that many factors must be cared when producers grind coal powders, for example the inflammability. Double LM series grinding mill and ball mill well solve these problems. And they are really high performance and price ratio products.

Till now, Double has many coal crushers and coal grinding mills used in South Africa. Though the scales are not very large, they do make many more South Africa people know Double. And we do believe our service and our products will help us enlarge our market in South Africa in the near future.

If you are one investor and plan to invest in South Africa coal industry, just be free to contact us; if you any problems about the coal crushing plants just be free to contact us. You can chat with our engineer on-line, the answer will be shown you immediately; you could also leave your email address with us, we will get in touch with you within 24 hours.

Mauritania mining processing plants

Mauritania is located in the western of Sahara. Though it belongs to underdeveloped country and is not known by many people. But the mineral resources of Mauritania do have great potential, particularly the iron ore resources. The proven iron ore reserves is the top two in Africa, it is also important in the world iron ore resources. Other primary minerals of Mauritania are gold, diamond, oil and gas, gypsum, phosphate, salt, kaolin, etc. So in many areas, many kinds of Mauritania mining ore crushing plants can be fond in the mining deposits.

Mauritania mining investment opportunity

Nowadays, the potential mineral resources win a lot of gaze of international investors. Foreign investors from different countries begin to invest in Mauritania mining industries. They purchase mining ore crushers and build mining processing plants in Mauritania. As a result, Mauritania mining investment is growing rapidly these years. In 2004, it became the Africa’s third-largest mining investor after South Africa and Ghana’s.

Mauritania iron ore resources

Mauritania iron ore resources are mainly fond in the northwest zones, different scale iron ore crushing plants are built near Zouerat areas. In 2005, it estimated that the iron ore reserves are about 700 million tons, and the Ferrum is about 400 million tons. Average grade is about 57%.
The iron ore production is about 10 million tons per year, most of them are for export. At present, many important iron ore companies plan to enlarge the scale.

Gold and Copper resources in Mauritania

Mauritania has earlier copper, gold mining history. The most important copper and gold deposits are located in Mauritania northern orogenic belt and northeast of Nouakchott.. Many famous foreign investor has invested here and many copper ore crushing plants and gold processing plants were built here for many years.

Gypsum Resources in Mauritania

The chiefly gypsum products are from the mining mountain in the north of Nouakchott. Every year, 100 thousand tons gypsum are produced here. But many of the scale of the gypsum crushing plants are quite small. Supposing large scale gypsum production line in Mauritania can be built, the capacity will greatly increased.

Mining ore crushers for sale in Mauritania

Being one of the world-lead mining ore processing equipments manufacturer in China, Double helps customers design many mining ore crushing plants used in Mauritania, such as medium capacity iron ore production line, small scale gold ore beneficiation plants and kaolin crushing plants and gypsum crushing and grinding plants. The popular equipments used in these plants are iron ore jaw crusher, iron ore cone crusher, gold ore hammer crusher and gypsum impact crushers and matched equipments like vibrating screens, vibrating feeders and belt conveyors, etc. We would like to cooperate with investors from different countries. So if you plan to invest in Mauritania mining resources, just be free to contact us.

Chat with our engineers on-line, you can get answers immediately; leave your email address or your phone number, we will get in touch with you within 24 hours. We would like to help you solve your problems with you together.

Tanzania Mining Crushing Plant

Tanzania mineral resources are abundant; there are eight greenstone belts. Million tons of gold are fond in the history. Now the mainly proven mineral reserves are as followings:
Diamond reserve is about 2.5 million tons (content 6.5 carats/tons); gold reserve is around 800000 tons, there are 324 million tons of coals, 130 million tons iron ore, 10 million tons of phosphate, etc. Most of the mineral resources are not yet mined beside gold. It does be good chance for investors to build mining ore crushing plants in Tanzania.

Tanzania Mining Distribution

In Uluguru province, rhabdophane and titano-magnetite ore are fond in Wipu and Kisaki of Morogoro Mountain. The reserves of titano-magnetite in Kisaki is estimated of 20million~40 million tons, the grade is quite appreciable. Also gem, graphite and quartzite are found in Kisaki
The mining deposits in northwest zone of Iringa province are about 50 meters in thickness, along the TAZARA Railway. So it is really a good invest environments.
A lot of coal mines are fond in Liganga. And one 400MW heat power station are promised to built here. It bring great demands of coal. So investors can benefit from the problem greatly if they could build coal crushing plants here.
The famous copper mines locate in Kigugwe. Here the copper content is about 1.5% and latest data shows that it may reach to 4.0%.

Tanzania Mining Crushing Plant

Double is one professional mining crushing equipments and mining ore powder grinding mills manufacturer in China. Our mining ore processing equipments are very popular in Tanzania, For example, Double PE series jaw crusher, impact crusher, vibrating screens, vibrating feeders and cone crushers, MTM series grinding mills, MTW series grinding mills, ball mill, hammer mill and some other matched equipments are very hot.
Till now, we help customers build many mining ore crushing plant in Tanzania, such as coal crushing plants, copper ore crushing plants, iron ore crushing plants and quartzite crusher plants, etc. Now many of the mining ore crushing plants in Tanzania have been started to run. Some are still in building. Once all of the crushing plants are running, many more investors that invest in Tanzania mining industry will know Double better.

Tanzania mining crushing industry

If you are also interested in Tanzania mining crushing industry, if you have any questions about building one crushing plants in Tanzania, do not hesitate to contact us. We would like to help you solve your problems with you together.
Chat with our engineers on-line, you can get answers immediately; leave your email address or your phone number, we will get in touch with you within 24 hours.

Crusher plant production and maintenance

The production line of crusher plant mainly consists of Vibrating Feeder, Jaw Crusher, Impact Crusher, Vibrating Screen, Belt Conveyor, Electric Control Box, etc. Double equipment design different production lines ranging 50 t/h to 500 t/h by combining different models of equipments also matching Cone Crusher, Bag Dust Catcher, etc. to satisfy different customers’ technological requirements.

Crusher plant maintenance

Convenient maintenance is so important in the quarrying crusher plant industry. Maintenance can be defined as working on something to keep it in a functioning and safe state and preserving it from failure or decline. Maintenance activities at quarries range from the maintenance of machines, equipment and vehicles to the keeping of roadways on site in good order, attending to such matters as providing edge protection and securing excavations.

It’s important to keep structural costs down, to design for ease of maintenance and operation, and to combine best practices with advances in fabrication and erection.

Best installation for crusher plant

In mining operations, the layout of crushing plants and ancillary equipment and structures is a crucial factor in meeting production requirements while keeping capital and operational costs to a minimum.Since the crushing plant’s structure and enclosure can represent the largest single cost element in a primary crushing plant, it is imperative to optimize these structural and construction costs to suit the life of the operation.

The fundamental goal for the design of a crushing plant is an installation that meets the required production requirements, operates at competitive cost, complies with today’s tough environmental regulations, and can be built at a reasonable price despite the rising costs of equipment, energy and construction labor.