☆ Main new processes and new technology applications:
1, the mechanical cold sintering of vanadium-titanium ore was realized, and the production process of annular shaft furnace pellets was established.
The mechanical cold sintering process solves the problems of low strength and low output of vanadium-bearing ore. After several years of continuous improvement, the annular shaft furnace pelletizing process has become the leading process of pelletizing production in the company.
2. New smelting process of vanadium-titanium magnetite in large blast furnace of Chengde Iron and Steel Company.
The new smelting technology of vanadium-titanium magnetite in Cheng Gang's large blast furnace has begun to take shape, the blast furnace production has been stable for a long time, and various economic and technical indexes have reached a high level, which has achieved great economic benefits.
3. The large blast furnace adopts full dry bag dust removal technology.
The dry bag dust removal technology of large blast furnace is the first in China, which has achieved a major breakthrough in the development of blast furnace ironmaking technology in the direction of energy saving, environmental protection and high efficiency.
4. The mixed injection technology of bituminous coal and anthracite has been successfully applied in blast furnace, and the cyclone top-burning hot blast stove has been enlarged.
When bituminous coal and anthracite are sprayed together, the proportion of bituminous coal reaches more than 60%. Through innovation, the cyclone top-burning hot blast stove has the air temperature capacity of 1200℃ or above.
5. In the process of vanadium extraction and steelmaking, the technology of top-bottom combined blowing and high-efficiency double casting technology of slab caster are developed.
The top and bottom sides are repeatedly blown to extract vanadium, which makes the temperature of the molten pool more uniform; The double casting high efficiency technology of slab caster is the first in China, which fills the gap in China. In 2003, he won the third prize of National Metallurgical Science and Technology Progress Award.
6. A new technology of generating electricity by using the waste heat of direct-fired blower of steam turbine is developed.
The new power generation technology of steam turbine direct drag blower makes full use of blast furnace gas to reduce gas emission and energy conversion process.
7. The application of new large taper oxygen lance and five-hole nozzle.
The application of a new type of five-hole oxygen lance with large taper hole completely solved the problem of gun sticking and high labor intensity of post workers in semi-steel steelmaking.
8. Application of combined combustion technology in large slab heating furnace
Reasonable use of different quality gas can effectively reduce the oxidation burning loss of slab.
☆ Main new product development:
Speed up the adjustment of product structure, closely focus on the market, combine the resources, technology and technical equipment of Chenggang, determine the key varieties of wire rod, and pay attention to the market demand of high-strength steel bars and steel products in national key projects; Hot-rolled coil mainly develops new varieties such as hot-rolled steel strip (pipeline steel) for oil and gas transportation, hot-rolled steel strip for automobile beam, hot-rolled steel strip for cold rolling and low-alloy high-strength steel strip.