Copper oxide price

What is the first hand of copper futures trading?

Copper futures are commodity futures listed in the previous period and are commonly used in trading. At the current price of 70,000 yuan/ton, the transaction needs about 35,000 yuan, and 50,000 yuan can be used to trade copper futures.

Copper futures are futures products with copper as the subject matter, which are listed on the Shanghai Stock Exchange with the trading code of Cu.

Metallic copper, element symbol Cu, specific gravity 8.92, melting point1083 C. Pure copper is light rose or reddish. After the copper oxide film is formed on the surface, the appearance is copper. Copper has many valuable physical and chemical properties, such as high thermal and electrical conductivity, mechanical stability, high tensile strength, easy welding, corrosion resistance, plasticity and ductility. Pure copper can be drawn into thin copper wire and made into thin copper foil, which can be alloyed with metals such as zinc, tin, lead, manganese, cobalt, nickel, aluminum and iron. Copper is one of the earliest ancient metals discovered by human beings, and it was used as early as 3000 years ago.

Copper is a non-ferrous metal closely related to human beings, which is widely used in electric power, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in China. Copper is widely used in electrical and electronic industries, with the largest consumption, accounting for more than half of the total consumption.

Copper has been one of the earliest varieties traded by LME since the prototype of 1877 London Metal Exchange was formed. At present, the main foreign copper futures trading companies are London Metal Exchange and the New York Mercantile Exchange. LME's copper quotation is the most authoritative quotation in the industry, and its price tends to objectively reflect the transaction, while COMEX's price is more speculative. Domestic copper futures trading has a history of ten years since 9 1 was launched. Copper is the only variety in China that has experienced wind and rain but still maintains a considerable scale. The spot prices of SHFE and LME are often the same. There is no significant risk in domestic copper futures trading, and the performance rate is 100%. Copper futures price has become the authoritative quotation of domestic industry, and it has attracted more and more attention from enterprises and investors. Therefore, copper futures trading contract has become a reliable investment and hedging tool.

Looking for the latest price trends in copper oxide ore?

copper

1. Natural properties of copper

Copper is one of the earliest ancient metals discovered by human beings. As early as 3000 years ago, people began to use copper. Copper in nature is divided into natural copper, copper oxide and copper sulfide. The reserves of natural copper and copper oxide are very small. At present, more than 80% of copper in the world is extracted from copper sulfide ore, and the copper content of this ore is extremely low, generally around 2-3%. Metallic copper, element symbol CU, atomic weight 63.54, specific gravity 8.92, melting point 1083 Co. Pure copper is light rose or reddish. Copper has many valuable physical and chemical properties, such as high thermal conductivity, mechanical stability, high tensile strength, easy welding, corrosion resistance, plasticity and ductility. Pure copper can be drawn into thin copper wire and made into thin copper foil. It can form alloys with metals such as zinc, tin, lead, manganese, cobalt, nickel, aluminum, iron, etc. The formed alloys are mainly divided into three categories: brass is copper-zinc alloy, bronze is copper-tin alloy, and white copper is copper-cobalt-nickel alloy.

2. Copper smelting

Copper ore mined from copper mine becomes copper concentrate or copper ore with high copper grade after beneficiation, and copper concentrate needs smelting commission to become refined copper and copper products.

A. Copper ore processing

There are two kinds of copper used in industry: electrolytic copper and refined copper. The former is used to make special alloys, wires and wires in the electrical industry. The latter is used to manufacture other alloys, copper tubes, copper plates, shafts, etc.

A. classification and properties of copper ore:

The raw material of copper smelting is copper ore. Copper mines can be divided into three categories:

Sulfide minerals, such as chalcopyrite, bornite and chalcocite.

Oxidized minerals, such as chalcopyrite, malachite [CuCO3Cu2], azurite [2CuCO3Cu2], chrysocolla, etc.

Natural copper. Copper ore with copper content of about 1% is of mining value, because some impurities such as gangue can be removed from the ore by flotation to obtain refined ore with high copper content.

B. the smelting process of copper ore;

The process of extracting copper from copper ore is very complicated. Taking chalcopyrite as an example, firstly, concentrate sand, flux and fuel are mixed and put into a "closed" blast furnace for smelting at about 1000℃. So part of sulfur in the ore becomes SO2, and most impurities such as arsenic and antimony become volatile substances such as AS2O3 and Sb2O3, which are removed: 2 cufs 2+O2 = cu2s+2 FeS+SO2↑. Part of iron sulfide is converted into oxide: 2fes+3o2 = 2feo+2so2 ↑. Cu2S and the remaining FeS will fuse together to form "matte", and FeO and SiO2 will form slag: FeO+SiO 2 = FeSiO 3. The slag floats on the molten matte and is easy to separate, thus removing some impurities. Then move the matte into the converter, add flux, and then blow in air for blowing. Because iron has a greater affinity for oxygen than copper, and copper has a greater affinity for sulfur than iron, FeS in matte is first converted into FeO, which combines with flux to form slag, and then Cu2S is converted into Cu2O, and Cu2O reacts with Cu2S to form crude copper. 2cu2s+3o2 = 2cu2o+2so2 =, 2cu2o+cu2s = 6cu+SO2 =, then move the crude copper into a reverberatory furnace, add flux, introduce air to oxidize impurities in the crude copper, and form slag with the flux to remove. After impurities are removed to a certain extent, heavy oil is injected, and cuprous oxide is reduced to copper at high temperature by reducing gases such as carbon monoxide generated by heavy oil combustion. The refined copper obtained contains about 99.7% copper.

B. Copper smelting process

The development of copper-gold technology has gone through a long process, but so far the smelting of copper is still dominated by pyrometallurgy, and its output accounts for about 85% of the world's total copper production. Modern hydrometallurgy technology is gradually popularized, and the introduction of hydrometallurgy greatly reduces the smelting cost of copper. Pyrolysis and hydrometallurgy.

A. pyrometallurgical copper smelting:

Cathode copper, electrolytic copper, is produced by smelting and electrolytic refining, and is generally suitable for high-grade copper sulfide ores. Pyrometallurgical smelting is generally to raise the raw ore containing several percent or several thousandths of copper to 20-30% through mineral processing, and then to smelt matte in a closed blast furnace, reverberatory furnace, electric furnace or flash furnace. The generated matte is then sent to a converter to be blown into crude copper, and then oxidized and refined in another reverberatory furnace to remove impurities, or cast into anode plates for electrolysis. The process is short and adaptable, and the recovery rate of copper can reach 95%. However, the sulfur in the ore is discharged as sulfur dioxide waste gas in matte making and blowing stages, which is difficult to recover and easy to cause pollution. In recent years, there have been molten pool smelting such as silver process and Noranda process, as well as three in Japan

Us copper futures today's market

Yesterday's collection: 4.274 delivery method: physical delivery transaction unit: 25,000 pounds,

1. Copper futures are futures products with copper as the subject matter, which are listed on the Shanghai Stock Exchange with the trading code of Cu.

Second, the situation of copper.

1. Natural attribute

Metallic copper, element symbol Cu, specific gravity 8.92, melting point1083 C. Pure copper is light rose or reddish. After the copper oxide film is formed on the surface, the appearance is copper. Copper has many valuable physical and chemical properties, such as high thermal and electrical conductivity, mechanical stability, high tensile strength, easy welding, corrosion resistance, plasticity and ductility. Pure copper can be drawn into thin copper wire and made into thin copper foil, which can be alloyed with metals such as zinc, tin, lead, manganese, cobalt, nickel, aluminum and iron. Copper is one of the earliest ancient metals discovered by human beings, and it was used as early as 3000 years ago.

2. Main uses of copper

Copper is a non-ferrous metal closely related to human beings, which is widely used in electric power, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in China. Copper is widely used in electrical and electronic industries, with the largest consumption, accounting for more than half of the total consumption.

Quantity and quality standard of copper futures delivery products

Since1September, 1998, the subject matter of copper futures contracts has all implemented the GB/T-467- 1997 standard. High-purity cathode copper and standard cathode copper can be delivered without quality premium, only brand premium.

3. Factors affecting price changes

Supply and demand: production, consumption, import and export, inventory.

International and domestic economic situation: Copper is an important industrial raw material, and its demand is closely related to the economic situation. Import and export policies and tariffs: For a long time, China has been adopting the policy of "lenient import and strict export" in terms of import and export, because China is a big copper user and copper resources are insufficient. The average import tax rate of copper and copper products is 2%. In recent two years, with the progress of global economic integration, the country has gradually reduced export tariffs, and copper can basically be imported and exported freely, thus making domestic and foreign copper prices interactive.

The price of relevant international markets: for example, the price impact of LME and COMEX.

Industry development trend and its changes

Production cost of copper: At present, the international average cost of copper smelting by internal combustion method is 1.400- 1.600 USD/ton, and the cost of copper smelting by wet process is 8000-900 USD/ton. In recent years, the total output of copper hydrometallurgy has increased rapidly, reaching about 2 million tons in 1998, and will account for about 20% of the total output by the end of the 20th century.

The trading direction of international hedge funds and other speculative funds.

The price fluctuation of oil, exchange rate and other commodities will also have an impact on copper prices.

What is the difference between phosphorus deoxidized copper and oxygen-free copper in life and income?

At present, the price difference between copper oxide and 60-90 yuan/kg phosphorus deoxycopper in the market is the same.

As the main material of water heater, copper water heater with high heat transfer rate and oxidation resistance has limited efficiency. The higher the purity of key elements, the better the electrical and thermal conductivity of copper. The copper content in the phosphorus deoxidation copper process is 99.995%. Adding phosphorus leads to the decrease of copper oxygen content. The content of TP 1 phosphorus deoxycopper is 99.9%. In terms of low thermal efficiency, the content of phosphorus deoxidized copper in TP2 is lower than that in phosphorus deoxidized copper.

The oxidation resistance of materials in high temperature and high humidity environment is not important during the operation of water heater. Compared with the periodic table of gold elements such as aluminum and iron in Yuejin Institute, all water heaters should use copper pipes. The copper tube is broken, which affects the life of the water heater. The oxygen content of copper is relatively low, so it is about 10. Oxygen deposition can be reduced by using phosphorus oxyphosphate combined with copper oxide. The oxygen content of copper oxyphosphate is much lower than that of copper oxyphosphate, and its life is longer than that of copper oxyphosphate.

The concept of copper is very broad. Its color is purple. Pure copper is classified as copper alloy by adding a small amount of deoxidizing elements or their elements to improve the material properties. Ordinary copper, copper oxide, deoxidized copper and special copper containing a small amount of alloying elements are widely used to make electrical and thermal conductivity equipment, second only to silver.