Vale S.a.

Universidade Federal Do Espirito Santo

Leonidio Stegmiller

Reinaldo Walmir De Jesus

Aldo Gamberini Júnior

Jeferson Da Silva Correa

Aldo Gamberini

Jose Antonio Alves E Silva Reis

Poliana Belisário Zorzal

Patricia Machado Bueno Fernandes

Marlon Christian Marianelli Bastos

Mauricio Kuster Cunha

José Antonino Alves E Silva Reis

Erica Dutra Albuquerque

Antonio Alberto Ribeiro Fernandes

Liliane Durans De Moraes Costa

Jose Antonino Alves E Silva Reis

Alexandre Soares Pinto

Antonio Alves E Silva Reis

Celso De Jesus Silva

Rodrigo Ribeiro De Araujo

Claudio Marcio Oliveira Cesario

Jose Maia

Antonio Fernando Pereira Dos Santos

Altair Barbosa Da Silva

Ely Valeriano Doss Santos

A pelletizing process, having two distinct serial stages. In the first stage, crude (or green) pellets of a given ore, or a mixture of ores (such as iron ore, manganese ore and other minerals), are produced, while in the second stage, a Device for Improvement of Crude Pellets, is used. The Device includes a slightly elastic and smooth surface, with reduced attrition rate, that may be striated, and that, encircled in itself, forms a cylindrical geometric hollow figure supported by a metallic structure, also cylindrical, with the set forming a finishing drum. The Device rotates with an inner and continuous charge of ore pellets, and can rearrange the structure of such pellets, improving their physical quality: compressive strength, sphericity and surface finishing, and assimilate fines generated during previous processes. This device allows application of diverse materials to the pellets to add required extra properties per specificities of subsequent industrial processes.

Device for the improvement of crude pellets and pelletizing process

A process for the inhibition of particulate emission during friction of heat-treated iron ore pellets includes the following steps: a) removal of heat-treated iron ore pellets at a temperature of 200&#xb0; C.; and b) spraying of an alcohol by-product on pellets. The use of an alcohol by-product as an inhibitor of particulate emission is further described, with the alcohol by-product being sprayed on heat-treated iron ore pellets, which can partially or completely replace water during the handling, stacking, loading, and unloading of materials such as pellets, granules, fines, and other products from iron ore and other minerals. This process significantly reduces the emission of particulates in the an operational area.

Process for inhibiting particulate emission during friction of heat-treated iron ore pellets and use of an alcohol by-product to inhibit particulate emission

An advantageous and effective process for obtaining carboxymethyl cellulose (CMC) from agro-industrial residues, comprising the steps of a) Preparing the raw material, wherein the raw material is washed, dried, grounded and washed again; b) a pumping step, wherein the product obtained from the step a) is reacted with sodium hydroxide; c) a synthesis step, wherein consists in grounding the pulp; adding a solution of isopropanol and distilled water under stirring at room temperature; adding NaOH aqueous solution up to the alkalization of the mixture; adding monochloroacetic acid in isopropanol; filtrating; suspending in methanol solution and neutralizing with acetic acid. The CMC obtained from the process can be employed in a several industrial processes.

Process for obtaining carboxymethyl cellulose from agro-industrial residues and carboxymethyl cellulose and use thereof

A process for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission is provided, and the process includes weighing the amount of heat treated pellets discharged from furnaces, measuring the temperature of the heat treated pellets discharged from furnaces, applying cooling fluid on the heat treated pellets until they reach temperatures below 140&#xb0; C., and spraying the alcoholic derivative on the heat treated pellets. Also provided is a first device for applying cooling fluid that is capable of calculating a dosage of cooling fluid to be applied to the heat treated pellets, a second device for applying alcoholic derivative that is capable of calculating a dosage of alcoholic derivative to be applied to the heat treated pellets already cooled, and a carrier device that continuously communicates with the first device for applying cooling fluid and with the second device for applying alcoholic derivative.

Process for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission and system for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission

Growing community of inventors

Vitória, Brazil

Leonidio Stegmiller