The details of stainless steel are as follows:

In recent years, China's stainless steel production has developed rapidly, and the shortage of stainless steel scrap and nickel ore resources has become more and more prominent. The latent stainless steel scrap market is huge.

In recent years, China's stainless steel production capacity has grown rapidly. In 2001, domestic stainless steel reached 730,000 tons, an increase of more than 80,000 tons over the same period of the previous year. The demand for stainless steel in the domestic market is also rising. In 2001, China's apparent consumption of stainless steel reached 2.25 million tons, an increase of 30% over the previous year, which is greater than the US consumption of 2 million tons, making it the world's largest consumer of stainless steel. According to speculation, in 2002, China's stainless steel growth rate was about 8-10%, and the growth rate was 18-225,000 tons. However, as China's stainless steel production capacity continues to increase, the contradiction between supply and demand of stainless steel scrap steel and nickel, chromium and other resources for smelting stainless steel is becoming increasingly prominent. In China, nickel and chromium resources are scarce, mainly relying on imports.

In recent years, China's stainless steel production will continue to develop. During the "Ninth Five-Year Plan" period, Ningbo Baoxin Stainless Steel Factory, a joint venture between Baosteel and Nisshin, and Zhangjiagang Pohang Stainless Steel Factory, a joint venture between Jiangsu Zhangjiagang and South Korea's Pohang, were built by Shanggang No. 10 Plant and American Arrigani Luther. The stainless steel project of Taigang's Shanghai Shida Precision Stainless Steel Plant, Lum's joint venture, was completed in 2003; the stainless steel project of Shanghai Baosteel No. 1 Steel Company was completed and put into operation in 2004-2005, and the stainless steel long profile project of Shanghai Wugang Company, The second phase of Shanghai Krupp Stainless Co., Ltd., etc., will be put into production in recent years. As a result, China's stainless steel sheet and coil capacity has increased from the current 16% to 60-70%. After the "10th Five-Year Plan", China's stainless steel production capacity will reach 2 million tons. However, the demand in the domestic market will exceed this level. At present, China's per capita consumption of stainless steel is only 1.6 kg / year, while the world's per capita consumption is 3.7 kg / year, and the per capita consumption of the world's advanced countries is 8.9 kg / year. If China's per capita consumption level reaches 3 kilograms, the country's stainless steel consumption is 4.2 million tons. Therefore, in China, both the production volume and consumption of stainless steel will increase exponentially, which will stimulate the demand for stainless steel scrap and nickel, chromium and other resources. The future domestic stainless steel scrap market is very huge. Therefore, from now on, it is necessary to pay great attention to the shortage of stainless steel scrap and nickel, chromium and other resources.

The production of stainless steel in private enterprises is developing rapidly. In recent years, in order to meet the multi-level needs of the stainless steel market, a large number of private stainless steel production enterprises came into being. Some medium-sized enterprises, private enterprises represented by Jiangsu Nantong and Shanxi Weida, have introduced advanced smelting equipment from abroad and formed the smelting capacity of high-quality stainless steel with an annual output of 100,000-150,000 tons. In Jiangsu, Zhejiang, Guangdong and other regions, some small enterprises use induction furnace to melt scrap steel as raw materials to produce stainless steel pipes and bars. Some enterprises use stainless steel materials as raw materials to further reprocess stainless steel strips, welded pipes, wires and wires. According to incomplete statistics, private enterprises have formed an annual output of 500,000 tons of stainless steel smelting capacity and 700,000 tons of stainless steel processing capacity per year.

In order to solve the problem of insufficient raw materials such as stainless steel scrap, it is necessary to start from the system and mechanism to establish a complete set of standardized stainless steel scrap steel recycling system to prevent outflow. At the same time, for imported stainless steel raw materials, we must formulate positive measures from the policy, such as the import of stainless steel raw materials, give fair adjustments in tax policy, support and ensure the normal production of stainless steel production enterprises, and fundamentally solve stainless steel scrap and The problem of insufficient raw materials.

First, the new characteristics of China's stainless steel scrap resources

In the past, we often said that China has few countries with stainless steel scrap. Recent research suggests that this statement needs to be corrected. Generally, there are three main sources of stainless steel scrap resources: one is the scrap produced in the producer's stainless steel production process, such as injection, cutting, cutting, trimming, etc.; the second is the production of stainless steel products or engineering construction process. Scrap, such as scraps, car scraps, etc.; life cycle recycling of scrap, such as used equipment or dismantled waste building materials. Due to the late development of stainless steel consumption and production in China, the life cycle of stainless steel is relatively long. Compared with the early stainless steel consumption countries, this part of China's stainless steel scrap resources is less.

In addition to the above three sources of stainless steel, domestic stainless steel supply sources are imported stainless steel scrap and stainless steel scrap selected from imported waste equipment (commonly known as foreign metal waste). The dust, waste residue and pickling mud recovered in the production of stainless steel and products also contain a certain amount of stainless steel scrap resources.

China's largest stainless steel consumer country and the largest stainless steel producing country are also among the largest countries in the world of stainless steel scrap resources. It is estimated that in 2010, the number of stainless steel scrap produced in China will exceed the US stainless steel output. Whether it is possible to pay attention to and properly recycle and utilize stainless steel scrap is of great significance to the healthy development of the domestic stainless steel industry.

Guessing of stainless steel scrap resources in China in the next two or five years

From a qualitative point of view, we discuss the sources of stainless steel scrap, the source of supply, and the sources of resources that can be exploited and utilized. It is concluded that the largest stainless steel consumer countries and the largest stainless steel producers are also among the largest countries in the world of stainless steel scrap resources. The conclusion.

Below, we further discuss the speculation of stainless steel scrap resources in the next few years from a quantitative perspective. To discuss this topic, the first encounter is the source of multiple sources and supply of stainless steel, more manufacturers and manufacturers, which has historically been impossible to count, and there is no data that can be referenced. We apply the "inaccuracy principle" to the stainless steel market and develop research and speculation, that is, to fully understand the significance of this principle in research and speculation, and thus pay more attention to accurate measurement and scientific guessing. Specifically, it is necessary to strengthen research on factors that may cause “inaccurate measurement”, and on the basis of strengthening comprehensive research, pay attention to the correction of measurement and guess results; pay attention to the trend of development, and make simple guesses. Strengthen tracking and continuous correction of trend guesses.

About the scrap produced in the producer's stainless steel production process. From the information we can obtain, the international stainless steel industry usually thinks that the comprehensive yield of stainless steel from crude steel to steel is 85% to 88%, considering the stainless steel scrap that is partially fed into the dust, waste residue and pickling mud during the production process. Manufacturers should have at least 10% scrap that can be recycled during stainless steel production.

Scrap steel produced during the manufacture of stainless steel products or during construction. This is more difficult to measure statistics. The verification standard for the re-export rate of stainless steel processing trade in the relevant industries is generally around 65%. Considering the recycling of large scraps and recycling of about 65%, it can produce about 1% of stainless steel scrap.

Recycling scrap steel on the life cycle of stainless steel. Although China's stainless steel consumption and production started late, stainless steel has a long life cycle. Compared with the early stainless steel consumption countries, this part of China's stainless steel scrap resources is less, but the average life cycle of stainless steel is estimated to be around 25 years, and there are also 200,000 tons per year. the above.

In 2005, the actual import of stainless steel scrap was about 200,000 tons, and the stainless steel scrap selected from imported waste equipment and shredded materials (commonly known as foreign metal waste) was about 100,000 tons.

Stainless steel scrap resources also contained in stainless steel production, dust, waste residue, and pickling mud recovered during product manufacturing. Since there is no mature technology and there is no statistical data in this regard, this part of the resources is not calculated when making the following guess.

According to the domestic consumption of wood rust steel reached 10 million tons in 2010, the domestic stainless steel crude steel reached 11 million tons, and the stainless steel scrap resources selected from imported stainless steel scrap and imported "foreign metal waste" continued to maintain the 2005 level.

We can see that in 2010, China's stainless steel scrap resources are nearly 3 million tons, far exceeding the US stainless steel production.

Third, the main source of waste stainless steel

China's nickel and chromium resources for smelting stainless steel are scarce. In the past, the application of stainless steel in China was far less extensive. The self-sufficiency rate of stainless steel production was less than 30%. It mainly relied on imports. The annual waste of stainless steel resources was very small. Stainless steel scrap and The contradiction between supply and demand of resources such as nickel and chromium has become increasingly prominent. In China, stainless steel scrap is even more scarce, and almost no stainless steel scrap can be recycled every year. Second, stainless steel has a long service life and will not be scrapped for several years or even decades. Therefore, there are fewer stainless steel scraps. Therefore, a large part of China's stainless steel scrap is imported.

The classification of scrap stainless steel is closely related to the use of stainless steel, mainly in the following sources:

1. Domestic waste:

Scrapped stainless steel appliances (old materials) used in daily life, most of the waste stainless steel imported from Japan and South Korea in China belongs to this category, and can only be used as furnace charge. Kitchen equipment, tableware, etc. The main steel grades are SUS304 and 430. The food processing industry mainly manufactures food processing machinery and containers, such as grain, beer and beverage, dairy processing equipment, quick freezing and hiding equipment, etc. The main steel grades are 304, 321, 1cr13 and antibacterial ferritic stainless steel.

2. Industrial waste:

The scraped and punched scraps (new materials) in the industrial production process include some tubes, rods, plates, etc. that can be directly used, and the number is small. The urban landscape project is mainly made of stainless steel welded pipe. The car industry is mainly ferritic stainless steel 409 for automobile exhaust pipe. Other industries such as urban water supply engineering, environmental protection and petrochemical, electric power industry, there are also many waste stainless steel. Pumps and containers for oil, gas and acid are large markets for the production of waste stainless steel tanks, pipes, pumps and valves. The main steel grade is 18/8 stainless steel.

Due to the wide variety of stainless steel scraps, it is necessary to strengthen the sorting, processing and storage of various types of alloy scrap.

Fourth, the recycling and processing of waste stainless steel

For the smelting of stainless steel, the "non-oxidation method", "oxidation method" and "return oxygenation method" smelting process are generally adopted, and the "return oxygen blowing method" is adopted, and the stainless steel scrap steel is directly used for smelting, and the cost is low and the benefit is low. high. Nowadays, in some developed countries abroad, most of them use the "return material oxygen blowing method" to smelt stainless steel. However, the stainless steel scrap used in this smelting method accounts for about 50-80% of the total amount of raw materials. If there is no stainless steel scrap resource, it becomes "no rice."

In Jiangsu, Zhejiang, Guangdong and other regions, some small enterprises use induction furnaces to melt scrap steel as raw materials to produce stainless steel pipes and bars. Some enterprises use stainless steel materials as raw materials to further reprocess and produce stainless steel strips, welded pipes, wires, wires, etc., and some small processing. The factory uses scrap steel, scraps, screws, chemical fittings, etc.

V. Significance of recycling and utilization of stainless steel scrap

Private enterprises have long been familiar with the rich characteristics of China's stainless steel scrap resources. Guangdong Foshan, Guangdong Qingyuan, Zhejiang Taizhou and other places have appeared a lot of waste materials from waste equipment (commonly known as foreign garbage

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