Question

Установіть послідовність технологічного процесу виробництва сталі. виробництво сталі спікання залізної руди в агломерат видобуток і збагачення залізної руди виробництво чавуну

Answer 1

Ответ:

1 - Видобуток і збагачення залізної руди

2 - спікання залізної руди в агломерат

3 - виробництво чавуну

4 - виробництво сталі

Объяснение:

Answer 2

Sequence of Technological Process in Steel Production

The production of steel involves several steps in a technological process. The sequence of these steps can vary depending on the specific production methods used by different steel plants. However, a common sequence of the technological process in steel production typically includes the following steps:

1. Mining and Extraction of Iron Ore: The first step in steel production is the extraction of iron ore from the earth. Iron ore is a mineral that contains iron in various forms, such as hematite (Fe2O3) and magnetite (Fe3O4). Iron ore is typically mined from open-pit mines or underground mines.

2. Ore Beneficiation: After the iron ore is extracted, it undergoes a process called beneficiation or ore dressing. This process involves crushing the ore into smaller particles and separating the iron-rich particles from the gangue (unwanted materials). Various techniques, such as magnetic separation, gravity separation, and flotation, may be used for ore beneficiation.

3. Agglomeration: The next step is agglomeration, where the iron ore concentrate is combined with other materials, such as limestone and coke breeze, to form agglomerates or pellets. Agglomeration helps improve the efficiency of the subsequent ironmaking process by enhancing the flowability and reducibility of the iron ore.

4. Ironmaking: The agglomerated iron ore is then subjected to ironmaking processes to convert it into iron. The most common ironmaking process is the blast furnace method, which involves the reduction of iron ore using coke (a form of carbon) as a reducing agent. In the blast furnace, the iron ore is melted and reduced to produce molten iron, known as hot metal or pig iron.

5. Steelmaking: The hot metal obtained from the ironmaking process is further processed in a steelmaking furnace to produce steel. There are different steelmaking methods, including the basic oxygen furnace (BOF) process and the electric arc furnace (EAF) process. In the BOF process, oxygen is blown into the hot metal to remove impurities and adjust the carbon content, resulting in the production of steel. In the EAF process, scrap steel is melted using electric arcs to produce new steel.

6. Casting and Forming: Once the steel is produced, it can be cast into various shapes and forms. Casting involves pouring the molten steel into molds to create ingots, slabs, or billets, which can then be further processed into finished products through rolling, forging, or other forming processes. The specific casting and forming methods used depend on the desired final product.

It is important to note that the sequence and specific details of the technological process in steel production can vary depending on factors such as the type of iron ore, the steelmaking method employed, and the desired end products. The steps mentioned above provide a general overview of the process.