According to the definition, any ore containing economically available iron can be called iron ore. Therefore, there are many kinds of iron ores, among which magnetite (Fe3O4), hematite (Fe2O3) and siderite (FeCO3) are mainly used for ironmaking. Grade refers to the mass fraction of iron in iron ore, in which the theoretical highest grades of hematite, magnetite, siderite and limonite are 70%, 72.4%, 48.3% and 62.9% respectively. Iron ore has a single production purpose and is one of the raw materials for iron and steel production enterprises. Sinter, lump ore and pellet ore have different uses.

Port RMB wet ton cost = US dollar CIF * exchange rate * 1. 13*( 1- moisture)+port miscellaneous fees.

Disk price = port spot price /( 1- moisture) The most suitable price for delivery.

steel products

Rebar is a common name for hot-rolled ribbed steel bars. There are two commonly used classification methods: one is to classify according to geometric shape, and to classify or classify according to the cross-sectional shape and rib spacing of transverse ribs. For example, in British Standard (BS4449), steel bars are divided into type I and type II. This classification mainly reflects the grip performance of steel bars. Secondly, rebar is divided into three grades according to its strength grade (yield strength), such as China standard (GB 1499.2-20 18). According to Japanese industrial standard (JISG3 1 12), rebar can be divided into five categories according to its comprehensiveness. In addition, steel bars can also be classified according to their uses, such as ordinary steel bars for reinforced concrete and heat-treated steel bars for reinforced concrete. Steel bars are widely used in civil engineering construction such as houses, bridges and roads. From highways, railways, bridges, culverts, tunnels, flood control, dams and other public facilities to the foundations, beams, columns, walls and slabs of buildings, steel bars are indispensable structural materials.

Wire rod (also commonly known as "high-speed wire rod" or "wire rod" in the industry) refers to the steel rolled into a disc shape after hot rolling by a wire rod mill, with a general diameter of 5.5-14 mm. Wire rod is mainly used for building and drawing steel wires and their products. Due to the need of manufacturing standard parts, many cold-drawn blanks directly use wire rods, which have the advantages of fewer drawing heads, strong continuity and high drawing efficiency than straight rods. The common wires are mostly circular cross-section, and the wires with special cross-section are oval, square and threaded, but the production is very small. With the development of industry, the application field of wire rod is more and more extensive, and the requirements for its variety and quality are becoming more and more strict and professional. There are many kinds of steel for wire rod, including carbon structural steel, spring steel, carbon tool steel, alloy structural steel, bearing steel, alloy tool, stainless steel and so on. Most steel grades that need to be processed into wires are produced into wires by wire mill, and then drawn into wires.

Hot-rolled coil is a strip steel made of slab (mainly continuous casting slab) heated by heating furnace (or soaking furnace) and rolled by roughing mill and finishing mill. The hot-rolled strip from the hot-rolled coil of the last finishing mill is cooled to the set temperature by laminar flow, and is coiled into a hot-rolled strip by a coiler. Hot rolled coil includes steel strip (coil) and steel plate cut from the steel strip. Steel strip (coil) can be divided into straight hair coil and finishing coil (divided coil, flat coil and longitudinal shear coil). Hot-rolled coil products have excellent properties such as high strength, good toughness, easy processing and forming, and good weldability, and are widely used in manufacturing industries such as cold-rolled substrates, ships, automobiles, bridges, buildings, machinery, oil pipelines and pressure vessels.

Manufacturing cost of pig iron = (1.6× iron ore +0.5× coke) /0.9

The manufacturing cost per ton of crude steel = (0.96× pig iron +0. 15× scrap steel) /0.82.

Wire cost = (1.03t crude steel+rolling fee) × 1. 13.

The rolling cost of different varieties is slightly different, which is generally 150-300 yuan/ton.

coal

Coking coal, also known as "main coking coal", is a kind of coking coal with strong cohesiveness and coking property, and is an indispensable basic raw material coal blending in coke production. Usually, in coke production, the blending ratio of coking coal has a lower limit requirement, which generally accounts for about 30%-50%, and about 1.33 tons of coking coal is consumed per ton of coke. Coking coal, as the most representative coking coal, connects the three major industries of coal, coke and steel, and occupies an important position in the industrial chain. Coking coal that can be used for futures delivery must be clean coal washed by coal preparation plant, which is strictly limited to a single coal type by using vitrinite reflectance standard deviation index, and at the same time, sufficient coking is ensured through small coke oven experiments.

Coke is converted from coking coal by high-temperature dry distillation in a coke oven. The production of 1 ton of coke consumes about 1.33 ton of coking coal. Coke can be used as reducing agent, energy and carbon donor in blast furnace ironmaking, cupola casting, ferroalloy smelting and nonferrous metal smelting, and can also be used in calcium carbide production, gasification and synthetic chemistry. According to statistics, more than 90% of the world's coke production is used for blast furnace ironmaking. Metallurgical coke has become one of the essential raw materials of modern blast furnace ironmaking technology, and is regarded as the "basic grain" of iron and steel industry, which has important strategic value and economic significance. China is a traditional producer and exporter of coke, and coke is one of the few resource-based products in China that ranks first in the world all the year round and has important influence.

Coking profit formula: coke price-(charged coal * 1.33+ labor cost and depreciation (there are some differences in different regions, which can be roughly calculated as 250 yuan/ton))+product profit deduction (that is, coke enterprise profits brought by crude benzene, coal tar, ammonium sulfate and gas).

ferroalloy

Silicon, manganese, silicon and ferrosilicon are mainly smelted by electric furnace. There is little difference in production technology between them, but the raw materials needed for production are not the same. Theoretically, they can be transformed into each other, but in the actual production process, variety transformation is more difficult and costly.

In the production process, manganese ore, coke and other auxiliary materials are first added, then produced in a furnace according to a certain proportion, and then melted in an electric furnace to form silicon manganese. From the production process of silicomanganese, the raw materials in the upstream are mainly manganese ore and coke, while in the midstream are silicomanganese 65 17, silicomanganese 60 14 and high silicomanganese, and in the downstream are steel mills.

In terms of cost ratio, the cost of manganese ore accounts for 60%, coke 15%, electricity price accounts for 20%, and other auxiliary materials account for 25%.

The cost calculation formula of manganese ore: ((Australian block * 15%+ South African semi-carbonic acid *40%+ Gabon * 15%+ Brazil * 15%+ low-grade semi-carbonic acid *15%)+80) * 2.

Coke: Ningxia metallurgical secondary coke *0.55

Electricity fee: 0.38*4000.

Accessories: 400

Labor and maintenance: 200

Depreciation and financial expenses: 150

In ferrosilicon production, silicon dioxide is the main raw material, blue carbon is the combustion-supporting reducing agent, and electrode paste and iron filings are the important auxiliary materials. In ferrosilicon production, electricity accounts for about 60%, blue carbon accounts for 15%, silicon dioxide accounts for 6%, and iron oxide accounts for 3%. In the ferrosilicon industry chain, the upper reaches are mainly blue charcoal and silica, the middle reaches are 72# ferrosilicon and 75# ferrosilicon, and the lower reaches are export, metal magnesium, steel mills and foundry.

Calculation formula of ferrosilicon cost: silica * 1.75+ blue carbon * 1. 15+ electricity price *8000+ iron oxide scale *0.025+ auxiliary materials 300+ labor and depreciation 500 (Ningxia cost calculation).

stainless steel

Iron-based alloys with chromium content above 12% are called stainless steel. Stainless steel has good corrosion resistance, high plasticity and toughness, and is widely used in machinery, petroleum, chemical, food, medicine and other industries. Stainless steel can be roughly divided into three categories: 200 series, 300 series and 400 series, of which 300 series is the most commonly used, while 200 series and 400 series can partially replace 300 series in some applications. 304 in 300 series is one of the most widely used austenitic stainless steels, which is suitable for manufacturing deep drawing parts, acid pipes, containers, structural parts and various instrument bodies. And can also manufacture non-magnetic and low-temperature equipment and parts.

Stainless steel smelting cost = (electrolytic nickel *0.0 1+ high ferronickel *7+ ferrochromium *0.34)/0.9+ 1200 smelting cost.