KemEcal™ Dispersants Process recovery varies substantially

depending on the ore, the combination of metals present in the ore,

and the grade of ore being processed. We are a leader in dispersant technology which

is highly effective for mineral grinding and dispersion used to maximize throughput

and aid in transport and handling. With over 30 years of experience in supplying

dispersion technology to North American mining operations, we provide high-quality,

proven solutions for your mineral processing and handling needs.

Our KemEcal™ dispersant product line spans a large number

of acrylic–based polymers and copolymers of varying

molecular weights, pH, termination routes, charge densities

and functionalities for desired performance characteristics.

We utilize various monomers for optimal dispersion and

grinding efficiency. Recognized variances in ore type,

content and quality, and well as the need for improved

economics, opened the doors to our formulated KemEcal

TC product line. These products have exhibited synergistic

effects in grinding and dispersion of certain minerals.

Our water–based dispersant polymers and formulations

are designed to improve processing efficiency, aid in

transportation, improve handling and provide end-use

product quality benefits. They are effective in dispersing

and stabilizing a wide range of high–solids mineral slurries,

including kaolin clay, calcium carbonate, lime, gypsum, iron

oxide and other minerals. Our products reduce the viscosity

of clay and carbonate, as well as solids containing clay and

carbonate as waste product, allowing for easier transport

and processing. Where a reduction in particle size is needed,

Chemistry Recommended use

KemEcal 211 Polycarboxylate, sodium salt General dispersant used for a variety of dispersion needs; effective for all

mineral slurries using anionic dispersants including kaolin clay and calcium

carbonate containing solids, iron oxides, and others

KemEcal 2332 Polycarboxylate, sodium salt High–performance general dispersant; effective in mineral slurries with

naturally broad particle size distribution; proven effective in kaolin clay

and calcium carbonate containing solids

KemEcal 260 Polycarboxylate, sodium salt High performance, low Mw dispersant; good incorporation into mineral

slurries; improved viscosity in dispersion of finer particle size minerals

KemEcal 240 Polycarboxylate, sodium salt High–performance dispersant; good incorporation into mineral slurries;

similar to Colloid 211 with improved wet–out capabilities in some kaolin

clay and calcium carbonate mineral slurries

KemEcal 220 Polycarboxylate, sodium salt High–performance dispersant of slightly higher Mw; good incorporation

into mineral slurries, including coarser grades

KemEcal 207 Polycarboxylate, sodium salt General dispersant with slightly higher Mw; used in mineral slurries and

detergents and cleaners

KemEcal 117/50TD Polycarboxylate, sodium salt TiO2 dispersion

KemEcal 102 Polycarboxylate, ammonium salt General dispersant used in mineral slurries with sodium-free requirements

KemEcal TC 2500 Polycarboxylate formulation Cost-effective high pH dispersant; effective for certain clay bodies; meets

dispersion needs in iron ore operations

KemEcal TC 9010 Polycarboxylate formulation Cost-effective high pH dispersant; effective for certain clay bodies; meets

dispersion needs in iron ore operations; higher grade version of TC 2500

KemEcal TC 8385 Polycarboxylate formulation High pH dispersant, recommended where thixotropy may be problematic

our products are used as effective grinding aids. They allow

grinding at a higher solids content, resulting in either capacity

improvements or similar milling results with a smaller set

of mills. Grinding is one the most energy-intensive process

steps in refining metals, and our technology can help. The

result is not only improved product quality for the end-user

but also improved cost-efficiency for the production plant.

Kemira has laboratory capabilities and expertise to recommend

the most cost-efficient solution for your unique situation.

Dispersant demand curve testing is typically performed by

our expert R&D personnel. We conduct high-shear studies

to predict mineral slurry behavior under that environment.

We also conduct grinding studies to understand the

feasibility of particle size reduction and rheology control.

KemEcal™ Dispersants & Grinding Aids for Mining Applications

Kemira makes this information available as an accommodation to its customers and it is intended to be solely a guide in customers’ evaluation of the products. You must test our products to determine if they are suitable for your intended uses and applications, as well as from the health, safety and environmental standpoint. You must also instruct your employees, agents, contractors, customers or any third party which may be exposed to the products about all applicable precautions. All information and technical assistance is given without warranty or guarantee and is subject to change without notice. You assume full liability and responsibility for compliance with all information and precautions and with all laws, statutes, ordinances and regulations of any governmental authority applicable to the processing, transportation, delivery, unloading, discharge, storage, handling, sale and use of each product. Nothing herein shall be construed as a recommendation to use any product in conflict with patents covering any material or its use.

KemEcal is a trademark of Kemira Oyj or its subsidiaries.

08/2

011

1000 Parkwood CircleSuite 500

Atlanta, Georgia 30339 USA

Tel. +800 347 1542

Kemira P.O. Box 330

FI-00101 HelsinkiFinland

Tel + 358 10 86 11www.kemira.com