kalinga sponge iron limited vacancy and related products

Kalinga Sponge Iron Limited had some vacancy and potential for its related products which is a non-government company incorporated on October 24, 2000. It is a listed company and is classified as a “stock company”.

The authorized capital of the company is 32 million rupees and the paid-up capital is 78.20188% or 250.246 million rupees. Kalinga Sponge Iron Limited’s last annual general meeting was held on 29 September 2017. According to the Ministry of Corporate Affairs (MCA), the company last updated its financial data on 31 March 2017.

Kalinga Sponge Iron Limited has been mainly engaged in manufacturing (metals and chemicals and their products) for the last 22 years and the company is currently active. The current board members and directors are AKHIL KUMAR AGARWAL, PREM CHAND AGARWAL, HANS RAJ DHANKAR, SHISH PAL SOLANKI, RAVINDER SINGH, SHASHI AGARWAL, and AMIT KUMAR AGARWAL.

Sponge iron is formed by reducing iron ore to metallic iron by reacting with carbon in the form of coal etc. 1100 degrees Celsius. Sponge iron is also known as direct reduced iron, metallized iron or hot briquetted iron.

Sponge iron is used in the steel industry as a substitute for scrap in induction and electric arc furnaces. Over the years, a lack of expensive molten scrap has made sponge iron an important raw material for the production of high-quality steel.

In India, rich iron ore deposits have led to the entry of prominent players in the Indian industry, and the use of ore lumps and fine particles has made the country the largest producer of sponge iron in the world.

JISPL entered the field in the early 1990s, and over the years has continued to refine its technology to become the second largest producer of sponge iron in India.

Miderx’s involvement in the direct reduction process dates back to the work done by the Surface Combustion Company in the 1930s. The company joined Midland Ross in 1959 while developing the rapid Heat processor as a precursor to the Fastmet process. Surface Combustion was later renamed Midrex.

The first Midrex direct reduction unit was installed in Portland, Oregon in 1969, with two 12-foot diameter vertical furnaces, each designed to produce 150,000 tons of sponge iron per year. Over the past 40 years, Midrex has designed and built larger units, phasing out Midrex vertical furnaces from bore diameter; it has been extended from 3.7 m to 4.25 m and finally to 7.5 m and introduced it to the steel industry.

The main coordinates of the Midrex method are as follows:

  • Added iron ore: The added iron ore is added in the form of cooked pellets in the process, and the high-quality hematite can be used to a certain extent depending on the conditions.
  • Reducing agent: Natural gas is broken down after the reforming process. In the Midrex process, the proportion of carbon monoxide gas in the reducing gas mixture is greater than hydrogen.
  • Types of reduction furnaces and their conditions: Midrex furnaces are vertical shaft furnaces that operate at slightly below atmospheric pressure. Its input and output are dynamically sealed and regulated by input and output flow.

  • Reduction temperature: about 850 ~ 920 ℃.
  • Craft history: Since 1969.
  • Process positioning: comprehensive integration and commercialization.
  • Process capacity: Midrex furnaces started with smaller diameters and as technology improved, they evolved into larger diameter, larger capacity furnaces. The emergence of giant modular furnaces with an annual output of more than 1.5 million tons illustrates this point. However, it should be noted that the smaller Midrex process furnaces are still in the production cycle and operating economically. This demonstrates the ability of the process to provide different capabilities.
  • Market share: about 60% of the total production of sponge iron

kalinga sponge iron limited vacancy

As mentioned earlier, Kalinga sponge iron limited company is a company with vacancy for more potential buyers. The HYL process has undergone significant changes to its basic design process over the past few years. First and second generation processes are based on direct reduction and the use of furnaces under different conditions from the initial stage of reduction to the final stage and discharge. In recent years, the fourth generation of HYL furnaces has come onto the market with the aim of eliminating the box reformer.

Input iron ore: Input iron ore is boiled in the form of pellets in the process, considering the rock properties, hematite nuggets can be used.

kalinga sponge iron limited vacancy

Reducing agent: In this process, as in the Midrex process, cracked natural gas (but with the reformer removed) is used as the reducing agent. In addition, the use of water vapor is expected to generate hydrogen reduction gas and increase the reduction gas composition. In this process, the hydrogen content of the reducing gas mixture is much higher than the carbon monoxide content, and hydrogen acts as the main reducing agent.

Type of reduction furnace and its conditions: This furnace is similar to the vertical shaft furnace of the Midrex process. The furnace is sealed with a mechanical (hydraulic) mechanism and the atmospheric pressure reaction is much higher and can be adjusted to 7 atmospheres to achieve the desired reduction reaction rate.

Reduction temperature: about 850 to 780 degrees Celsius

Craft history: Since 2003.

Process positioning: Unbound but commercialized.

Capacity: The capacity of the fourth-generation oven can be customized and highly variable according to the market demand for its technical knowledge. Currently, units are offered from 2 to 800,000 tons annually.

Market share: There are currently 4 modules launched or under construction.

This process is one of the oldest direct reduction methods and its structural concept is based on a horizontal cement kiln. In this method, hot coal (as a reducing agent) is mixed with iron ore to produce sponge iron in a horizontal furnace.

Input iron ore: In the Midrex or HYL process, high quality cooked pellets of up to about 30% iron ore lumps are generally recommended. Up to 100% chunks can be used in this process, as well as some types of raw pellets. It is not recommended to use magnetite in this process as it requires high quality hematite.

Reducing agent: The advantage of this method is that thermal coal of relatively low quality can be used as the reducing agent. The coal in the furnace produces carbon monoxide gas, which reduces the iron oxide. Although the temperature inside the furnace is relatively high, the reaction rate is relatively low, and the capacity of the furnace will be low. There is no hydrogen in this process.

kalinga sponge iron limited vacancy

Type of reduction furnace: Rotary horizontal furnace operating at slightly above atmospheric pressure. The main rotary kiln consists of a preheating section and a reduction zone, and the gases produced by the reaction are discharged at a temperature of around 1000°C without an expected recovery system, which is why this energy is often used to generate electricity. The oven’s cooling section is a completely separate chamber, cooled by water from the outside.

  • Reduction temperature: about 1000 ~ 1100 ℃.
  • Craft history: Since 1980.
  • Process positioning: stabilization and commercialization.
  • Optimum capacity: about 1 million to 150,000 tons per year. module.
  • Market share: about 23% of the total production of sponge iron.

Tunnel furnace process

This process is the oldest direct reduction method. In this method, thermal coal is mixed with iron ore as a reducing agent. Natural gas produces the required reduction temperature and reduces silicon carbide (SiC) crucibles in a tunnel furnace.

kalinga sponge iron limited vacancy

Input iron ore: Hematite or magnetite iron ore in concentrate form, preferably high quality such as 65%.

Reducing agent: The advantage of this method is that thermal coal of relatively low quality can be used as the reducing agent. The coal in the furnace produces carbon monoxide gas, which reduces the iron oxide. Despite SL/RN, the required temperature for reduction comes not from coal, but from natural gas. Therefore, the contamination of this method is very low.

Type of reduction furnace: Tunnel furnace consists of three parts: preheating zone, reduction zone, and cooling zone.

  • Reduction temperature: about 1200 ~ 1250 ℃.
  • Craft history: since 1908 (over 100 years).
  • Process positioning: stabilization and commercialization.
  • Optimum capacity: around 50,000 tons per module.
  • Market share: about 5% of the total production of sponge iron.


kalinga sponge iron limited

Kalinga sponge iron limited is a company working in this field of expertise for a very long time and has great potential on producing and manufacturing sponge iron and related products.

sponge iron

We are a leading producer of Direct Reduced Iron (DRI), also known as Sponge Iron, which is produced by the direct reduction of iron ore (in the form of lumps, pellets or fine particles) with reducing gases from natural gas or coal.

What is iron fungus?

Sponge iron is also known as direct reduced iron (DRI). Direct reduction is an alternative melting rail line that has been developed to overcome the difficulties of conventional blast furnaces. DRI is successfully produced through natural gas or coal technology. Iron ore is reduced in the solid state at 800-1050 degrees Celsius by reducing gas (H2+CO) or coal. The direct reduction process uses pallet iron or natural “block” ore.


Sponge ironmaking is the process of tumbling lumps of iron ore (usually 5mm-18mm in size) with “selected” quality iron coking coal small dolomite in an inclined rotary kiln and burning in the presence of air for about 12 hours. Products are air-cooled, magnetically separated, screened, and dimensioned in a finished warehouse prior to shipment.


kalinga sponge iron limited

The process requires direct reduction of solid iron ore (ie removal of oxygen from the ore) to metalize the ore at a “critical” temperature to achieve this.

The basic reduction reactions in the coal-based DRI process are as follows:

C+ O2 = CO2

CO2 + C = 2CO

3Fe2O3 + CO = 2Fe3O4 + CO2

Fe3O4 + CO = 3FeO + CO2

FeO + CO = Fe + CO2

We make high quality sponge iron of uniform quality. The manufacturing process followed by Lloyd Metals and Energy Limited makes it unique and superior to its competitors.

The production of sponge iron is now a clear technical achievement. It can be produced in large quantities by heating a mixture of iron oxides and solid fuel in a rotary kiln. During its passage through the furnace, the coal is charred, partly for reduction and partly for combustion, and the resulting excess char is returned to the feed to replace an equal amount of coal.

While the production of sponge iron is a clear technological feat, the method used is wasteful in terms of fuel consumption. Also in terms of impurities, the quality and composition of iron is far from the desired level.

The main objective of the present invention is to overcome or at least significantly reduce the mentioned disadvantages in order to make the process for the production of the sponge iron economically attractive.

It is an object of the present invention to provide a method for preventing sulfur from entering the sponge iron during sponge iron production.

Another object is to provide a process for treating sulfur-contaminated iron sponge products in which the maximum amount of iron can be recovered. These and other objects will appear from the following more complete description of the invention:

It has been suggested that limestone or dolomite, a mixture of iron oxide and fuel, be added to the charge, the role of this material is to bind to the sulfur content of the fuel, thereby preventing the sulfur from penetrating the sponge iron, which it would otherwise do.

Although the addition of limestone or dolomite has been found to be effective to some extent, it has now been found, according to the present invention, that better results can be obtained by adding quicklime or even slaked lime to the charge.

This results in even more effective sulfur removal as volatile sulfur compounds begin to form from the fuel before the calcium carbonate breaks down into more reactive oxides. Although burnt or slaked lime is partially converted to carbonate if added to the charge, this precipitated carbonate has been found to be more reactive than the natural material.

kalinga sponge iron limited

In general, the present invention relates to steps in a process for producing the sponge iron by reducing ferrous ore with a solid fuel, which step comprises using a compound selected from the group consisting of oxides, hydroxides, carbonates, and mixtures of calcium and magnesium.

In practice, a difficulty in making sponge iron when limestone is used in combination with the sulfur in the fuel is that the fine lime and the calcium sulfide formed therefrom tend to adhere to the sponge iron and thereby increase its sulfur content. For this purpose, Patetlt O 2,880,083, patented on March 31, 1959, removes fine-grained material from limestone or dolomite before mixing with feed.

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