Magnesium hydroxide in the pulp and paper industry

BleachMag® protects cellulose and fibers in mechanical pulp peroxide bleaching and in delignification during chemical pulp bleaching. BleachMag® is a new and efficient reagent based on natural magnesium hydroxide Mg(OH)2. It effectively replaces soda ash Na2CO3, caustic soda NaOH, caustic magnesia MgO, sodium silicate Na2SiO3 and magnesium sulfate MgSO4. BleachMag® improves efficiency as well as product quality and reduces process costs.

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Economic savings	Production advantages	Environment benefits
Lower bleaching cost Lower waste water treatment cost Higher pulp yield	BleachMag® acts as alkali and magnesium source The liquor preparation and the process itself becomes simpler The pH in pulping remains more stable Drastic reduction of oxalate scaling	Improved settling properties of the waste water sludge Reduced TOC, COD and BOD. Safe and easy storage and use Lower chlorine content of BleachMag® compared to competitors

Economic savings

Production advantages

Environment benefits

Lower bleaching cost
Lower waste water treatment cost
Higher pulp yield

BleachMag® acts as alkali and magnesium source
The liquor preparation and the process itself becomes simpler
The pH in pulping remains more stable
Drastic reduction of oxalate scaling

Improved settling properties of the waste water sludge
Reduced TOC, COD and BOD.

Safe and easy storage and use
Lower chlorine content of BleachMag® compared to competitors

BleachMag® requires no major changes or investments at the pulp, paper, or board mill. Russian Mining Chemical Company, RMCC, provides BleachMag® as a powder or a 50 % stabilized aqueous dispersion.

Products
Specifications
Technical materials

Chemical pulping

BleachMag® can be used in sulphite and bisulphate pulping to replace both caustic magnesite, and soda ash or lime. The replacement of soda ash with BleachMag® powder reduces the consumption of chemicals some 30 %.

Chemical pulp bleaching

BleachMag® reacts as an alkali source and cellulose protector in chemical pulp bleaching. BleachMag® slurry contains both hydroxyl ions OH- and magnesium ions Mg²⁺, so it can replace magnesium sulfate MgSO₄, and substitute partially caustic soda NaOH, in chemical pulp bleaching. It has been proved in laboratory and mill that BleachMag® slurry is a cost effective option.

Mechanical pulp bleaching

In bleaching of mechanical pulps, BleachMag® reacts as a stabilizer and an alkali agent. BleachMag is a cost effective alternative to caustic soda and sodium silicate. BleachMag® can be used in all GW, PGW, RMP, TMP, and CTMP high yield mechanical pulp mills. BleachMag® slurry can also improve pulp strength and paper machine retention.

BleachMag powder
(PDF, 200.09 кБ)

BleachMag liquid
(PDF, 258.56 кБ)

Packaging
(PDF, 248.13 кБ)

BleachMag®

+7 495 789 65 30 sales@magminerals.ru