Monthly Archives: September, 2013

Fluorite

Application of fluorite

Used in production of hydrofluoric acid, which is used in the electroplating, stainless steel, refrigerant, and plastics industries, in production of aluminum fluoride, which is used in 13.9.30--萤石2aluminum smelting, as a flux in ceramics and glass, and in steel furnaces, and in emery wheels, optics, and welding rods.
The majority of the United States’ annual consumption of fluorspar is for the production of hydrofluoric acid (HF) and aluminum fluoride (AlF3). HF is a key ingredient for the production of all organic and non-organic chemicals that contain the element fluorine. It is also used in the manufacture of uranium. AlF3 is used in the production of aluminum.
The remainder of fluorspar consumption is as a flux in making steel, glass, enamel, and other products. A flux is a substance that lowers the melting temperature of a material.

Sources of fluorite

The United States once produced large quantities of mineral fluorspar. However, the great fluorspar mines of the Illinois-Kentucky fluorite district are now closed. Today, the United States imports fluorspar from China, South Africa, Mexico, and other countries.
A small percentage of the fluorspar consumed in the United States is derived as a by-product of industrial processes. For instance, an estimated 5,000 to 8,000 tons of synthetic fluorspar is produced each year in the uranium enrichment process, the refining of petroleum, and in treating stainless steel. 13.9.30--萤石0Hydrofluoric acid (HF) and other fluorides are recovered during the production of aluminum.

Brief introduction of fluorite

Fluorspar (fluorite) is calcium fluoride (CaF2). It is found in a variety of geologic environments. Fluorspar is found in granite (igneous rock), it fills cracks and holes in sandstone, and it is found in large deposits in limestone (sedimentary rock). Fluorspar is relatively soft, number 4 on Mohs’ scale of hardness.
Pure fluorspar is colorless, but a variety of impurities give fluorite a rainbow of different colors, including green, purple, blue, yellow, pink, brown, and black.Fluorite crystals can be well formed, beautiful and highly prized by collectors.Despite its beauty and physical properties, fluorspar is primarily valuable for its fluorine content.

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Dressing technology of purge the iron ore from the potassium feldspar

Potassium feldspar purge out iron ore dressing technology mainly includes:Crushing potassium feldspar with crusher,the crushed material should be into the drum sieve and being sieved.The particle size below 6 mm should be sent into mill grinding into fine powder.For the potassium feldspar powder, A series of beneficiation process is needed, including the following process steps.

Wash mud

Sent the 20-200 mush powder material into the spiral chute, for separation and select the sediment.

Sorting

Materials after separation and sediment will be sent into the table, in order to wash out the ferric oxide.

Chosen

Sent the materials removed ferric oxide into strong magnetic separator for selected,to select out the mica iron material.Then put the material into magnetic separator,elected out the mica iron material again.

Purification

Sent the material into high frequency vibrating screen to screen,to purge out the ferric oxide and ferroferric oxide in the powder,then get potassium feldspar powder.

Pickling powder

Using sulfuric acid as acid lotion,according to the concentration of acid and potassium feldspar powder blending mixed them.Under the condition of the sulfuric acid concentration to determine,the iron content of potassium feldspar powder is proportional to the weight to join by sulfuric acid.The acid cleaning thoroughly get rid of ferric oxide and ferroferric oxide,isolated the ferrous sulfate,then can get potassium feldspar powder.

screening of potassium feldspar powder

Potassium feldspar powder into the sieve of 20-200 mesh for sieve.The sieved material for iron content less than 0.24% of the finished product.

The advantages of dry process sand production line

What is the dry process sand production line

Compared with wet process sand production line,dry process sand production line is different from the wet,it do not need to use water.Dry process sand production line of legal system is the system of artificial sand of time don’t need to water the artificial sand to remove mud powder inside.But the way through the use of classifier,remove the inside of the sand clay powder,lower the inside of the artificial sand mud powder contentresulting in better sandensure the quality and grade of sand.

The advantages of dry process sand production line

Dry process sand production line has the following advantages compared with the traditional wet process sand production line:

Liberated from the constraints of the environment

Dry sand production line is not restricted by water resources and environment where lack of water can also be artificial sand,while traditional wet sand production line must be conducted in the place where is rich in water resources systemand.

Reduces the production cost

The traditional wet method in the production of sand production line need to have a lot of water to wash the sand.At the same time,dry process production line do not need to invest heavily in water,to a certain extent it reduce the capital investment.

More environmentally friendly

Wet production sand production line requires a lot of water to wash the sand.From a certain perspective for water resources,it is a waste and the washing of the powderis in the finished product is a waste.While the dry process production line do not need to wash with water,and can reasonable use the powderis.

Make the artificial sand grading is better

After get rid of the classifierto, mud powder inside of the artificial sand can be move out.This can achieve the standard of building sandartificial sand and can also control the classifier of stone powder content within the scope of the provisions of the state,so as to improve the compressive strength of concrete and the workability of concrete.

Clay

Brief introduction of clay

The term clay refers to a number of earthy materials that are composed of minerals rich in alumina,silica and water.Clay is not a single mineral.But a number of minerals.When 13.9.29--粘土3most clays are wet,they become “plastic” meaning they can be formed and molded into shapes.When they are “fired” (exposed to very high temperatures)the water is driven off and they become as hard as stone.Clay is easily found all over the world.As a result,nearly all civilizations have used some form of clay for everything from bricks to pottery to tablets for recording business transactions.

Application of clay

The United States both imports and exports clays and clay products.It is estimated that the United States consumes about 37.6 million tons of clays each year.13.9.29--粘土0

Ball clays are good quality clays used mostly in pottery but are also added to other clays to improve their plasticity.Ball clays are not as common as other clay varietiesOne third of the ball clay used annually is used to make floor and wall tilesIt is also used to make sanitary warepotteryand other uses.

Bentonite is formed from the alteration of volcanic ashBentonite is used in pet litter to absorb liquidsIt is used as a mud in drilling applicationsIt is also used in other industrial applications such as the “pelletizing” of iron ore.Common bentonite is used to make construction materials such as brickscementand lightweight aggregates.

Fire clays are all clays (excluding bentonite and ball clays) that are used to make items resistant to extreme heatThese products are called refractory productsNearly all (81%) of fire clays are used to make refractory products.

Fuller’s earth is composed of the mineral palygorskite (at one time this mineral was called “attapulgite”)Fuller’s earth is used mostly as an absorbent material (74%)but also for pesticides and pesticide-related products (6%).13.9.29--粘土1

Kaolinite is a clay composed of the mineral kaolinIt is an essential ingredient in the production of high quality paper and some refractory porcelains.

Distribution of clay

Clays are common all over the worldSome regionsas might be expectedproduce large quantities of specific types of clayIt is estimated that the state of Georgia has kaolin clay reserves of 5 to 10 billion tonsThe United States is self-sufficient so it imports only small amounts of clay from MexicoBrazilUnited KingdomCanadaand assorted other nationsThe United States exports nearly half of its production worldwide.

The nations producing the most significant amounts of the various clays are as follows:

  • Kaolin: BrazilUnited Kingdomand the United States are the dominant producers of high quality kaolin.
  • Ball clays: Major producers of ball clays are Germanythe United StatesUnited Kingdomthe Czech RepublicChinaand France.
  • Fire clays: Major fire clay producing countries are Germanyand the United States.
  • Bentonite: Major producers of bentonite are the United StatesGermanyTurkeyand Greece.
  • Fuller’s earth: Major producers of fuller’s earth are the United States (attapulgitesmectite)Spain (attapulgitesepiolite)and Senegal (attapulgite).

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The two miners of Korea and Russia teamed up to develop Agaskyr molybdenum

The leader of Russian energy En + group announced that they have signed a memorandum of understanding with the south Korean industry and steel producers who the group (SeAH).The two sides will hand in hand to develop Agaskyr molybdenum deposits in eastern Siberia, Russia.

According to the mou, En + group,which is a wholly owned subsidiary and the Russia’s largest producer of molybdenum steel SMR company will with the group subsidiaries, South Korea’s largest producer of molybdenum alloy SeAHM&S company cooperation.The SMR has the feasibility study of Agaskyr molybdenum ore deposit and bank financing. According to the research results, the two sides will consider long-term cooperation of other possibilities.

ArtemVolynets,who is the En + group chief executive, said the cooperation with the inferior group is very important to the development of Agaskyr deposits, and it is a important milestone for En + group cooperation with South Korea’s.He believe that Russia’s eastern Siberia rich resources and advantageous geographical location provides a unique advantage for En + group to meet the growing demand of South Korea and other Asian countries .

Data shows,the headquarters of En + group is located in Russia.It is a diversified mining and metals and energy group,which holds the world’s largest aluminium company controlling stake in Russian aluminum joint company and Russia’s largest independent power suppliers Russian energy group co., LTD. 100% stake, as well as 100% stake in the company of the world’s leading supplier of molybdenum steel SMR.The group’s business covers iron and steel production, mining investment and information technology, such as, the iron and steel company is South Korea’s largest producer of special steel.