The need to recover fine particles originating from the processing of ores or the waste from metallic material brought about the development of the technology of agglomeration. This advance provided the commercial use of the fine portion of these materials, as well as minimizing the environmental impact caused by the production of fine or particulate material.

In this context, briquetting, that is, the agglomeration of fine particles with the help of pressure, stood out as a suitable method for processing these materials, and became the pioneering method of agglomeration.

The recent environmental concern, resulting in increasingly stricter laws, resulted in briquetting gaining a new impulse for application in industry.
Today, it consists of an excellent alternative for the reuse of industrial waste (charcoal fines, peat, plastics, biological waste, metal filings, and others) either as an energy source or as raw material.

It was in this context that Renova Recycling was created in 2003, to serve the growing demand for raw materials for the manufacture of steel and for the needs of companies that generate waste containing iron, for providing an economical and ecologically correct destination for their waste.

An offshoot of Renova Waste Processing, a company with more than 20 years of experience in treating industrial waste, Renova Recycling is installed in its own area of 15,000 m2 (161,000 ft2) in the industrial hub of Cumbica, Guarulhos, being one of the pioneers in the sale of briquettes made from iron fines and in providing cold rolling briquetting services to third parties.

With the latest-generation equipment and installations, Renova Recycling is qualified to offer its customers products and services with a guarantee of quality and origin, being in the process of ISO-14000 certification.

Concept

Briquetting consists in the agglomeration of fine particles by means of pressure, allowing a product to be obtained that is not only compacted, but with the adequate shape, size, and physical-chemical metallurgical parameters. The reduction in volume of the material, in some cases, in addition to the technological benefits, allows fine materials to be transported and stored in the most economical form.

The mixture is cold pressed, in order to obtain agglomerates, called briquettes, which must show adequate resistance to handling/movement and storage.

In our case, in the application of external pressure to the material to be briquetted, we use the briquetting in roll presses, where the material flows continuously, between two parallel rolls, with cavities or molds placed on its surface, of suitable size and shape, rigidly connected among themselves, turning with the same speed, but in opposite directions.sentidos contrários.

Flowchart

Renova Briquetting

Metal Content

The metal content of the briquettes is a direct function of the iron content plus the sum of other metals. The iron present in the briquettes is found in the free or metallic state and in the form of oxides.

For using briquettes in electric ovens, we manufacture our briquettes with the addition of a percentage of carbon, stoichiometrically calculated, allowing the oxides contained in the briquettes to be reduced by the carbon, a process that maximizes the metal use and reduces the formation of scoria.

For using briquettes in converters or oxygen, there is no need for the addition of a reducing agent, since the process or the products used in the fusion act as oxide reducers.

Briquetting Services

Aiming to better meet the needs of our customers, Renova Recycling also performs briquetting labor services for third parties.

The great advantage of this system is that the steel mills and foundries that currently pay to discard powdered waste containing iron and other alloys can reuse them in their fusion processes through briquetting. This system, in addition to removing the costs of discarding the materials which up until then were “unusable”, guarantees the generator/customer a raw material with a known chemical composition, the reuse of alloys, and reduction of the volume of purchases of metal materials for fusion.

For large generators/consumers, Renova Recycling is capable of developing and implementing “On Site” briquetting plants, according to the customer’s need.

Advantages to using briquettes

1 Reduction of the acquisition cost: briquettes with excellent cost x benefit ratio.
2 Another option for raw material: partial substitution of the standard raw materials (iron scrap, pig iron, sinter, etc.).
3 Preparation of the scrap baskets: since it has high density, the briquette is a facilitating agent in the process of assembling cold loads, providing the preparer the possibility of using materials of lesser density in the same basket.
4 Ease of storage and transport: provides for the storage of a large quantity in a small area, since it is a high-density material and offers a larger range of options for packaging and transport.
5 Product with a known and guaranteed average chemical composition.
6 Private raw material: since it is the producer of its own raw material, Renova Recycling offers a product that is less subject to price volatility, such as scrap, pig iron, and ore, being able to supply it through contracts at a fixed price, for a longer period than the competing products.