How is Ramming mass manufactured?

Ramming mass refers to the ores and other catalytic materials added to the smelting furnace, iron ore, billet, pig iron, iron and steel scrap, mineral powder, coking coal, coke, ferroalloys all belong to the charge. Concentrate or ore, flux and soot, etc. according to the smelting requirements formulated into a certain chemical composition and physical properties of the charge process, for the modern pyrometallurgical process is an important part of the process. Ramming mass preparation generally includes storage, batching, mixing, charging drying, charging granulation, charging dough, calcination and roasting.

What is ramming mass?

Metallurgical furnace ramming mass refers to the raw and auxiliary materials in the production of iron and steel smelting. It usually contains iron ore, scrap, pig iron, coke, ferroalloys and so on. At the same time, Ramming mass as an auxiliary product in steelmaking, is an important additive item in the steelmaking process. Throughout the steelmaking process, different sources of oxygen are used to oxidize the complex metals contained in the charge, and a variety of complex processes are employed to remove silicon, phosphorus, carbon, deoxidation, and alloying compounds by using good metallurgical charge.

Preparation of Ramming Mass

The physical state, chemical composition, water content and quantity of ramming mass, which consists of concentrate, return material, soot, flux, etc., may not necessarily meet the requirements of the smelting process. In order to ensure normal production, it is necessary to store enough raw materials and flux for a period of time.

Ramming Mass Composition

Concentrate or ore, flux and soot, etc. According to the smelting requirements formulated into a certain chemical composition and physical properties of ramming mass process, for the modern pyrometallurgical process is an important part of the process. Ramming mass preparation generally includes storage, batching, mixing, ramming mass drying, ramming mass granulation, ramming mass dough, calcining and roasting. In addition to calcination and roasting to make the charge chemical changes, other processes generally only physical changes.

Ramming Mass Mixing

Adequate mixing of the mixing materials is also an indispensable part of furnace ramming mass preparation. The purpose of mixing is to homogenize the composition of the charge. Mixing can be carried out in the cylinder mixer, but also in the wheel mixer. Rotary cylinder for circular motion, the furnace material by itself and the wall of the friction produced by a certain height, and then under the action of gravity to leave the wall was thrown down to the bottom of the cylinder, and so on and so forth. In the process of throwing down the material mutual impact mixing and stirring, the composition is gradually uniform. Materials in the wheel mixer mixing process is: when the wheel rotates, the material from a certain height to the mixing wheel, by the rotating steel rod into a scattered state, get mixed.

The physical state, chemical composition, water content and quantity of the furnace ramming mass, which consists of concentrate, return material, soot, flux, etc., may not necessarily meet the requirements of the smelting process. In order to ensure normal production, it is necessary to store enough raw materials and flux for a period of time. Smelters often deal with more than one mine or plant ore and concentrates, must be dosed with a variety of concentrates according to a certain ratio with the use, and mixed into the chemical composition, physical nature of the raw material is more consistent. Into the plant concentrates generally contain 8% to 15% water, while the smelting furnace ramming mass preparation, smelting process and its flue gas treatment require concentrates containing low moisture and need to be dried.

Induction Furnace Refractories3
Induction Furnace Refractories

A certain raw material, for as a smelting process, its particle size may be too fine need to binder granulation, or its permeability is not good enough, must be binder into the agglomerate. Oxides are often easier to reduce than sulfides, sulfates, chlorides or oxides of metals are more easily leached from the raw material, and therefore often need to be calcined and roasted by chemical methods, the raw material in the minerals into the desired form. For example: calcination to make CaCO3 into CaO and CO2; Through the roasting of metal sulfides into metal oxides or metal sulfates. For a specific raw material, the exact preparation process required depends on the raw material itself and the requirements of the smelting process.

Furnace lining materials are divided into three kinds: acidic furnace ramming mass, alkaline furnace lining materials and neutral ramming mass. Our factory produces Neutral Ramming Mass, Silica Ramming Mass and other refractory products, if you are interested, please feel free to contact us.

Neutral Ramming Mass2
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