-
Legal analysis: The standard provides for the determination of nickel content in ferronickel by EDTA titration. This standard applies to the determination of nickel content in ferronickel. Measurement range (mass fraction): .
Legal basis: "National Standard of the People's Republic of China: Determination of Nickel Iron Nickel Content EDTA Titration Method (GB T 30072-2013)" Article 3 The rules given by GB State Cave T are drafted.
This standard is proposed by China Iron and Steel Association. This standard specifies the determination of nickel trap content in ferronickel by EDTA titration. This specimen is suitable for the determination of nickel content in ferronickel.
Measurement range (mass fraction): .
-
The ** of nickel is 110-150 yuan kg.
According to the data provided by Jintou.com, the Russian nickel in East China is 110,400 yuan, and the Jinchuan Jinqiao nickel in East China is 115,400 yuan.
Preparation method of nickel:
1. Electrolysis. The enriched sulfide ore is roasted into oxide, reduced to crude nickel with carbon, and then electrolyzed to obtain pure metal nickel.
2. Carbonylation method. The sulfide ore of nickel is reacted with carbon monoxide to form tetracarbonyl nickel, which is decomposed after heating to obtain nickel metal with high purity.
3. Hydrogen reduction method. Nickel oxide can be obtained by reducing nickel oxide with hydrogen.
4. Oxygen is mixed in the blast furnace to replace sulfur, and nickel oxide can be obtained by heating nickel ore. Nickel metal can be obtained by reacting with the acid that has reacted with iron.
5. After the ore is calcined into oxide, nickel is obtained by reducing it with water gas or charcoal.
Physical properties of nickel:
Nickel is a silvery-white metal that is magnetic and has good plasticity. It has good corrosion resistance, nickel is similar to a silvery-white, hard and malleable metal element with ferromagnetism, it is able to be highly polished and resistant to corrosion. When dissolved in nitric acid, it is green.
It is mainly used in alloys (such as nickel steel and nickel silver) and as a catalyst (such as Ranny nickel, especially as a catalyst for hydrogenation).
Chemical properties of nickel:
It is located in the fourth cycle group . The chemical properties are more reactive, but they are more stable than iron. It is difficult to oxidize in the air at room temperature and is not easy to react with concentrated nitric acid. Fine nickel wire is flammable, reacts with halogen when heated, and slowly dissolves in dilute acid. It can absorb a considerable amount of hydrogen. <>
-
Summary. Dear, hello, the question you asked is as follows: the market price of nickel metal is now 12-130,000 yuan, so the calculation is one gram yuan.
Metallic elements. Symbol ni. Silvery-white, hard, malleable, plastic, slightly magnetic, not oxidized in the air. It is used to make nickel steel and chromium-nickel steel and various non-ferrous alloys, alkaline batteries, rheostats, electric heaters, etc., and can also be used for electroplating and coining.
It is a hard, malleable and ferromagnetic metal that is highly polished and resistant to corrosion. Nickel is an iron-loving element. The Earth's core is mainly composed of iron and nickel.
In the earth's crust, ferromagnesian rocks contain more nickel than siliceous aluminous rocks, for example, peridotite contains 1000 times more nickel than granite, and gabbro contains 80 times more nickel than granite.
Sincerely hope to help you, I wish you a happy life! If you find it helpful to you, please give it a thumbs up, thank you!
Content 3 nickel**.
Hello dear, I am helping you inquire about the relevant information and will reply to you immediately.
Dear, hello, the question you asked is answered as follows: the market price of nickel metal is now 12-130,000 yuan, so the calculation is one gram yuan. Metallic elements.
Symbol ni. Silvery-white, hard, malleable, plastic, slightly magnetic, not oxidized in the air. It is used to make nickel steel and chromium-nickel steel and various non-ferrous alloys, alkaline batteries, rheostats, electric heaters, etc., and can also be used for electroplating and coining.
It is a hard, malleable and ferromagnetic metal that is highly polished and resistant to corrosion. Nickel is an iron-loving element. The Earth's core is mainly composed of iron and nickel.
In the earth's crust, the nickel content of iron and magnesian rocks is higher than that of siliceous rocks, for example, peridotite contains 1000 times more nickel than granite, and gabbro contains 80 times more nickel than granite. I sincerely hope that bending the sail can help you, and I wish you a happy life! If you find it helpful to you, please give it a thumbs up, thank you!
-
Nickel: Ni 0 valence.
Nickel oxide nio +2 valence.
Nickel oxide Ni2O3 +3 valence.
-
The standard specifies the determination of nickel content in ferronickel by EDTA titration. This standard applies to the determination of nickel content in ferronickel. Measurement range (mass fraction): .
Legal basis: "National Standard of the People's Republic of China: Determination of Nickel Iron and Nickel Content EDTA Titration Method (GB T 30072-2013)" Article 3 The rules given by GB T are drafted.
This standard is proposed by China Iron and Steel Association. The standard also stipulates the determination of nickel content in ferronickel by EDTA dropping method. This standard is applicable to the determination of nickel content in ferronickel.
Measurement range (mass fraction): .
-
It's hard to say, there is no unified standard. It depends on the difficulty of workpiece processing, coating thickness and other requirements.
-
Recently, the depreciation of the renminbi by nearly 5% has triggered violent fluctuations in the global foreign exchange market and commodity markets, and the LME (London Metal Exchange) nickel price once fell to 9,100 US dollars. However, the nickel price of the Shanghai ** Exchange has significantly resisted the decline. From the perspective of the market outlook, affected by four major factors, the nickel market may stabilize and rebound in the future.
First, nickel ** has decreased significantly. Jinchuan Group produced 12,970 tons of electrolytic nickel in July, down from 13,800 tons in June. Jien Nickel started a 45-day annual maintenance of equipment on August 10, suspending the production of electrolytic nickel and nickel sulfate.
According to the statistics of 12 domestic electrolytic nickel smelters by relevant institutions, in the third quarter of 2015, 5 electrolytic nickel smelters have been shut down due to maintenance, and the output of electrolytic nickel will be reduced by 10,950 tons, an overall decrease of 5,150 tons compared with the second quarter.
Second, the nickel ore structure deteriorated again. According to statistics from relevant institutions, as of August 14, the nickel ore inventory in 12 major ports in the country was 15.95 million tons, a decrease of 5.1 million tons from the same period in 2014 and a decrease of 10.18 million tons from the historical high of 26.13 million tons on February 14, 2014. From the analysis of the variety structure of nickel content, the following low nickel ore is about 6.25 million tons, the medium nickel ore is about 6.4 million tons, and the above high nickel ore is about 3.3 million tons.
High-nickel ore accounts for only about 20% of the port's inventory, which is completely different from the structure of high-nickel ore accounting for more than 90% of the inventory before the spring of 2014.
Third, the production of ferronickel has been greatly reduced. In July this year, the national ferronickel output was 10,000 physical tons, down more than half of the 1.05 million physical tons in the same period in 2014; The cumulative output in January and July was 10,000 physical tons, down nearly 2 3 from 6.45 million physical tons in the same period in 2014. Due to the change of ore source structure, the quality of ferronickel has also declined significantly, and the nickel content of high ferronickel has decreased from 12% to 15% to 8% 10%, which has forced many stainless steel smelters to increase the use of refined nickel such as electrolytic nickel.
Although China's ferronickel imports increased by 10,000 physical tons to 10,000 physical tons in the first half of the year, compared with the reduction of nearly 4 million physical tons of domestic ferronickel, the increase in imports is very insignificant.
-
In 2009, the lowest cost price of nickel metal was 126,000 and the highest cost price was 135,000. Today**.
-
LME Instant **LME Electronickel £17800 tonnes.
Quality certification, also known as conformity assessment, is an effective method for managing the quality and quantity of products in the world. Quality certification is divided into two categories: product quality certification and quality system certification according to the certification object; According to the role of certification, it can be divided into safety certification and conformity certification. >>>More
First, product quality disputes must occur in the field of contract, and product tort liability is only based on the general premise of the contract, not the existence of a contractual relationship as a necessary premise for the occurrence of product tort liability. Product quality disputes are based on the existence of the original contractual relationship as a necessary premise, and there is no product quality dispute without a contract. However, on the one hand, the tort liability of the product is not caused by the contractual relationship, and this tort is caused by the object, not the damage caused by the act; On the other hand, many victims of infringement of Heyun products are not parties to the contractual relationship. >>>More
1. Prepare materials.
Fill in two copies of the "Food Production License Application Form" (to the quality and technical supervision department of the city (place) where it is located) in accordance with the requirements of the regulations; A copy of the business license, food hygiene license, and enterprise ** certificate (copy); If there is no need to apply for a ** certificate, a copy of the ID card of the person in charge of the enterprise shall be provided; A copy of the layout of the production site of the enterprise; A copy of the process flow diagram of the production enterprise (marked with key equipment and parameters); A copy of the enterprise quality management document; If the product implements the enterprise standard, a copy of the enterprise product standard filed by the quality and technical supervision department should also be provided; Other information that shall be provided as specified in the application form. >>>More
Think about it, what is there in the quality of stainless steel, such as stainless steel cabinets themselves are to eliminate a lot of problems on solid wood cabinets, such as waterproof and moisture-proof these two points have been done, many solid wood cabinets can not do this, and high-end stainless steel cabinet brand Bamberg is also thickened a lot on the countertop, many young people like strong and durable cabinets, it is very popular with young people.