Kemira Oyj

Xihui Yin

Duane C Wilson

Jean Robert Durand

Anna I Casasús

Anna Casasus

Stephanie Kofsky-Wofford

Sergio Cabo

Marcelo Moreira Costa

Forrest Strickland

The present embodiments generally relate to methods and compositions for the removal of selenium from a fluid in need of treatment, such as, for example, industrial wastewaters. The methods and compositions for the removal of selenium generally comprise the use of one or more coagulants, such as at least one iron-containing coagulant, and one or more reducing agents, such as at least one sodium sulfite-based reducing agent.

Methods and compositions for treating industrial wastewater

The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more cationic polymer depressants.

Cationic polymer selective depressants and use thereof in mineral ore purification methods

Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition.

Agglomerated hemicellulose compositions, methods of preparation thereof, and processes for enriching a desired mineral from an ore

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Marietta, GA, United States of America

Xihui Yin