Limult Iron Mining and Processing Factory in Nigeria
The raw materials used to produce pig iron in a blast furnace are iron ore, coke, sinter, and limestone. Iron ores are mainly iron oxides and include magnetite, hematite, limonite, and many other rocks. The iron content of these ores ranges from 70% down to 20% or less. Coke is a substance made by heating coal until it becomes almost pure carbon. Sinter is made of lesser grade, finely divided iron ore which, is roasted with coke and lime to remove a large amount of the impurities in the ore. Limestone occurs naturally and is a source of calcium carbonate.
Other metals are sometimes mixed with iron in the production of various forms of steel, such as chromium, nickel, manganese, molybdenum, and tungsten.
The Ore Extraction and Refining Process
Before iron ore can be used in a blast furnace, it must be extracted from the ground and partially refined to remove most of the impurities.
Historically, iron was produced by the hot-blast method, or later, the anthracite furnace. Either way, the fundamental activity in iron making involved a worker stirring small batches of pig iron and cinder until the iron separated from the slag. Called "puddling," this was highly skilled work, but was also hot, strenuous, and dangerous. It required a lot of experience as well as a hearty constitution.
Limult Group has a long history of building facilities that drive greater value. From exceptional levels of quality and safety — to ease of maintenance over time, we are firmly committed to helping our clients and partners achieve the short- and long-term strategic goals of every project we do.
Contact us at +2347052446249 for more information on our redefining industry development services or visit our store at www.limult.com/shop to see more products that we make available for the people.
Limult Gypsum Mining and Processing Factory in Nigeria
Nigeria is known to have records of occurrences tin, columbite, tantalite, lead and zinc. In fact, mining in Nigeria he said to have started with mining of tin ore in 1905.
such mineral with great industry use and but largely underdeveloped in Nigeria, is gypsum. About one billion tones of gypsum deposits are spread over many sites in Nigeria. It is an important input for the production of cement. It is also used for the production of Plaster of Paris (P0P) and classroom chalk, etc.
Being a key input in cement production, a strategy for large scale mining gypsum is urgently required to sustain existing cement plants and meet future expansion.
The proccess of mining
The process starts by extracting gypsum rock deposits from the ground using a ‘JOY mine cutter’ that scores away at the face of the gypsum rock. This is then broken up and transported to the surface.
The rock is then crushed into smaller pieces and sent to the homogenizer, which allows for any variances in the gypsum size to be reduced, ensuring consistency in each bag of plaster. The rock from the homogenizer is ground down even further before it goes through what’s called the calcination process. Here, any water from the rock is removed in a low temperature kettle to create the first resemblance of plaster powder. This then travels through the mill, where the particle size of the powder is modified to suit the type of plaster being made.
At this stage, the plaster is almost ready! With the inclusion of a few additives that give each mix of plaster its own special properties, the plaster is pumped into bags and then palletised. Quality control checks are carried out across every batch to ensure that customers receive the same product, every time.
From here, the plaster leaves the Gypsum plant and is sent to merchants and distributors, ready for plasterers to buy. Once the plasterer mixes the product with water, it will return back into its original state, creating a plaster finish for their project.
Limult Group has a long
history of building facilities that drive greater value. From exceptional
levels of quality and safety — to ease of maintenance over time, we are firmly
committed to helping our clients and partners achieve the short- and long-term
strategic goals of every project we do.
Contact us at
+2347052446249 for more information on our redefining industry development
services or visit our store at www.limult.com/shop to see more products
that we make available for the people.
Limult Graphite Mining and Processing Factory in Nigeria
Graphite resources are focused in recent years with the fast development of the refractory material and new energy vehicles . There are two different type graphite: Artificial graphite and Natural graphite. Every graphite mine has unique characteristics which need to be determined in advance. Therefore, it is of crucial importance to determine graphite flake morphology, primary flake size and liberation size.
Typical flake graphite deposits are gneissic and consist mainly of feldspar, quartz and mica. The size of the graphite flake is a very important fact under commercial consideration. Therefore, it is in the best interest of a flake graphite producer to maximize the amount of large flake. Limult is experienced in choosing the suitable grinding mill to reserve high yield rate of big flake graphite.
Thermal Purification And Chemical Purification:
Graphite purification furnace is used for continuous high temperature purification of graphite powder to match increasingly stricter environmental protection requirements. We have continuous type and pusher type for different purpose purification process. It is continuous loading and discharging under high temperature reducing the energy consumption and shortening the production cycle. The furnace adopts electrical resistant or induction heating that the temperature can reach up to more than 2600°C. Most of the impurities become gas, but the graphite will remain because of its heat resisting property. Both high temperature and chemical method can be used to satisfy the high purity requirement. The furnace uses high efficiency filter system, which can trap the dust and corrosive gases coming from the purification process.
Graphite used for high tech products such as Lithium ion batteries or fuel cells demands higher purity than typically upgraded by flotation. The chemical purification technology should be considered for further purification of graphite concentrate to TGC 99.99%. A basic process is thermal treatment in the presence of caustic reagents to dissolve siliceous impurities such as quartz, feldspar or mica. The graphite concentrate is mixed with caustic reagent and calcined at elevated temperatures. After calcination the graphite is leached with water washing away dissolved impurities. In order to get ultra-high purity graphite, the fine intergrown minerals residing between the graphite layers have to be removed. Thus, one or multi-stage acid washing with different acids or combinations is applied to remove impurities that are insoluble at alkaline conditions.
Contact us at +2347052446249 for more information on our redefining industry development services or visit our store at www.limult.com/shop to see more products that we make available.
Limult Gold Mining and Processing Factory in Nigeria
The process of Gold mining begins when geologists take ore samples to determine the best places for companies to mine. The mining process can begin once the mining engineers know where gold is located and what other materials surround it. The gold is mined with open-pit mining techniques if the gold is located close to the surface.
Gold that’s located farther below the surface is collected with underground mining methods. Large pieces of ore are made into smaller pieces, and then the sand grain-sized pieces are mixed with a cyanide solution to create a watery, mud-like mixture.
However, gold is readily dissolved in a number of solvents, including oxidizing solutions of hydrochloric acid and dilute solutions of sodium cyanide. Gold readily dissolves in these solvents because of the formation of complex ions that are very stable.
Gold melts at a temperature of 1,064° C (1,947° F). Its relatively high density (19.3 grams per cubic centimeter) has made it amenable to recovery by placer mining and gravity concentration techniques. With a face-centered cubic crystal structure, it is characterized by a softness or malleability that lends itself to being shaped into intricate structures without sophisticated metalworking equipment. This in turn has led to its application, from earliest times, to the fabrication of jewelry and decorative items.
With more years of experience in the processing of gold ore, we have accumulated a wealth of professional knowledge and we have done many successful projects. For these years, we're dedicated in providing professional gold extraction solution for different type of gold mine.
Contact us at +2347052446249 for more information on our redefining industry development services or visit our store at www.limult.com/shop to see more products that we make available.
Limult Glass Sand Mining and Processing Factory in Nigeria
Exploitation of the Non-metallic Minerals has not attained the desired level, mainly because of the various problems associated with their exploitation, development and processing for utilization. Many of the non-metallic minerals, which are vital to the industrial take off of the country, have been found in commercial quantities within the country.
They include limestone, dolomite, marble, kaolin, barite, diatomite, feldspar, quartz and silica sands, gypsum, talc, silimanite, kyanite, phosphate, salt and bentonite.
Nigeria has extensive deposits of good quartz silica sands. Many of which are associated with the coastal plain of sedimentary areas in the southern part of the country, although deposits also occur in some inland areas.
The major silica sand deposits in the country are located at Ughella–Delta State, Igbokoda, Ondo State, Baure, Katsina State, Badagry, Lagos State, and along the sandy shore line of the Atlantic, some inland deposit are also reported at Shebu, Plateau State and Ilaro, Ogun State.
Silica Sand/Quartz constitutes one of the most readily available geological materials used in industries and factories such as glass manufacturing companies. Silica Sand/Quartz are said to consist of high optimal percentage of silicon dioxide (SiO2) which is a very good chemically stable element and it remains almost the same no matter the series of cycles it may have gone through, either in transportation or re-deposition.
Quartz is silica occurring alone in pure state. Silica/glass sand on the other hand are products of weathering, erosion and transportation by rivers or/and the sea. Naturally occurring silica sands may contain some undesirable impurities like accessory haematite, rutile and dolomite etc.
Glass Sand is used in the production of various glass products: which include sheet glasses for windows, bottles, mirrors, optical instruments, chemical apparatus, electrical insulation and condensers, pipe, doors, crucibles, automobile and aircraft bodies, filters and building blocks. They are also used for making abrassives and for gravel packing in the petroleum industries.
Contact us at +2347052446249 for more information on our redefining industry development services or visit our store at www.limult.com/shop to see more products that we make available for the people.
Limult Feldspar Mining and Processing Factory in Nigeria
Feldspar is a kind of silicate minerals which contains calcium, sodium and potassium, there are many categories of Feldspar including albite, anorthite, etc. Feldspar mining process mainly applying flotation process, and Feldspar mining machines mainly including jaw crusher, ball mill, spiral chute, and concentrating table, etc.
Feldspar ore is the main source of feldspar mineral concentrate or purified feldspar used in the manufacture of various grades of glass and ceramics including high-end ceramics and electronic-grade glass fibers. The glass and ceramic industries, in particular, are major consumers of feldspar, accounting for 95% of total consumption.
In recent times, the increasing rate of depletion of high-grade feldspar ores has resulted in lower-grade ores becoming the primary source of feldspar. This has placed added pressure on producers to further optimize existing feldspar processing methods like flotation to more efficiently produce higher grades of feldspar for the specialty glass, ceramics and electronics markets.
Process Description
Conventional open-pit mining methods including removal of overburden, drilling and blasting, loading, and transport by trucks are used to mine ores containing feldspar. A froth flotation process is used for most feldspar ore beneficiation.
An amine collector that floats off and removes mica is used in the first flotation step. Also, sulfuricacid, pine oil, and fuel oil are added. After the feed is dewatered in a classifier or cyclone to remove reagents,sulfuric acid is added to lower the pH. Petroleum sulfonate (mahogany soap) is used to remove iron-bearingminerals.
To finish the flotation process, the discharge from the second flotation step is dewatered again, and a cationic amine is used for collection as the feldspar is floated away from quartz in an environment of hydrofluoric acid (pH of 2.5 to 3.0).
If feldspathic sand is the raw material, no size reduction may be required. Also, if little or no mica is present, the first flotation step may be bypassed. Sometimes the final flotation stage is omitted, leaving a feldspar-silica mixture (often referred to as sandspar), which is usually used in glassmaking.
Limult poses the best capabilities, best commodities and best assets, to create long-term value and high returns. We are among the top producers of major commodities, including iron ore, metallurgical coal and copper with substantial interests in oil, gas and energy coal.
Contact us at +2347052446249 for more information on our redefining industry development services or visit our store at www.limult.com/shop to see more products that we make available for the people.