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3 ways to recycle converter sludge in the steel plant

What is converter sludge

In the production process of metallurgical enterprises, converter oxygen blowing smelting is a necessary part of the steel making process.

During the converter blowing process, the oxygen injected into the pig iron undergoes an incomplete oxidation reaction with the carbon in the pig iron to form a flue gas containing CO. At the same time, iron and other accompanying metals enter the wet flue gas dedusting system in the form of flue gas as well. The soot carried by the washing sewage is precipitated and exists in the form of water-containing sludge. This is called the converter sludge.

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How to improve the Maerz quicklime process and turn dust to briquette

Quick lime powder is a kind of powdery waste produced in the production of the lime kiln. The price of quick lime powder is very low, which is basically less than half of the price of lump quicklime. But in the production process of lime kiln, the production rate of quicklime powder is very high, many of the lime powder kilns have an ash content of more than 20%. The inefficient use of these lime powders will not only cause economic waste, but also cause pollution to the environment.

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Two ways to use coal briquette in industry – briquetting technology

Coal briquette is a kind of coal product that has been briquetted under certain pressure with certain shapes and physicochemical properties from a coal briquette machine or an extruder machine.

It usually uses coal dust to mix with binder and sulfur-fixing agent as well as some other additives to get the briquette.

Industrial-fired boilers and industrial kilns use coal briquette to significantly increase thermal efficiency and reduce emissions of coal-fired pollutants compared to burning raw coal.

Coal briquetting with the cleaning process and the clean product is suitable for global development and worth encouraging.

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Different briquette binder for coal briquette, coke briquettes

By using a coal briquetting machine or a coke briquetting machine, these fine/dust can be easily turned to briquette. One thing in this briquetting process make things become easier, that is – binder.

The coal briquette and coke briquette binders have a dual function in the briquette making process.

1. it can infiltrate the coal particles, form a binder bridge to connect the particles, enhance the interaction between the coal/coke, and bond the particles together.

2. When carbonized, it can form a colloidal body, and the inert components are bonded together to form a high mechanical strength coal/coke briquette.

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Why make metallurgical briquette by cold briquetting process

With the development of the global economy, the gradual depletion of various mineral resources, besides, it also caused a variety of serious environmental problems, these have become factors that constrain the development of the global economy.

Countries all over the world are now doing a lot of work in environmental comprehensive management and developing circular economy. Now the global mainstream is the development and application of energy saving and emission reduction technologies.

Metallurgical briquette producing is an important part of the metallurgical process.

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How to make biomass briquette and pellet – biofuel technology

Biomass energy is the fourth energy resource in the world after coal, oil and natural gas.

Unlike other highly utilized energy sources, biomass is a renewable energy source.

There are various types of biomass, such as agricultural production waste, forestry waste and flammable biomass can be used as biomass fuels, which are rich in source and easily accessible.

Moreover, the production and processing of biomass forming fuel are convenient, the use and operation are simple, the economic benefits are considerable, and it is harmless and pollution-free. Therefore, the research and promotion of biomass fuel briquetting or pelletizing have great social and economic benefits.

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Why coke briquette better than metallurgical coke when using in casting

Coke briquette is a kind of fuel briquette that can be used as the blast furnace coke instead of metallurgical coke. It can also be used in casting (including steelmaking and iron), fertilizer, gasification and civil industries.

Coke briquette comes from the coke briquetting process, the way which uses a coke briquetting machine to briquette unbonded coal, weakly cohesive coal or coke fine, the utilization rate is as high as 70% to 90%.

The production of coke briquettes by coke process technology is very meaningful and promising in today’s shortage of high-quality coking coal resources.

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Coal briquetting technology – process, binder and the briquette machine

why doing coal briquetting

Coal briquetting is a process which turn the coal dust to briquette. Compare to directly use coal dust as fuel, use coal briquette not only helps to reduce the burning cost (reduce 20-30% of coal dust usage), but also makes benefit to the environment.

So, how can we make briquette from the coal dust, what things should we pay attention to on the briquetting process, follow our article and you’ll find your own way on coal briquetting.

Coal briquetting process

A simple coal briquetting process normally follow the way below

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How moisture affects the biomass briquetting process

The biomass briquetting technology is a technique for compressing various loose biomass raw materials into a certain shape, big strength and density fuel briquette by heating and pressing techniques.

Common biomass waste includes sawdust, wood shavings, wood flour, crop straw, rice husk, etc.

The high moisture, irregular shape and size, and low bulk density of biomass feedstocks make it difficult to process, transport, store and utilize.

But when these biomass materials are processed into briquettes, the density is greatly improved, and the cost of transportation and storage is reduced.

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