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Introduction:
Since the late 19th Century, General Chemical Corporation and its predecessors
have been producing aluminum sulfate, or "alum", as it is commonly called. As
one of the world's largest suppliers, we are a reliable source of high-quality
alum for users throughout North America.
We operate the largest number of alum plants in North America and are a technical
driving force in the pulp & paper and water and waste treatment industries.
We offer a broad line of aluminum chemistry: aluminum chlorohydrate (ACH), polyaluminum
chloride (PACl), aluminum chloride and various specialty formulations
(see our enhanced coagulants) along with a wide variety of alum products.
Alum Uses
Alum has been part of our lives ever since the time of early Egyptians, who
used it in dyeing and purification. Today, it is one of the most widely used
and versatile industrial chemicals.
Most of the alum produced today is used in the pulp & paper industry as well
as water and wastewater treatment. It is inexpensive and effective for a broad
range of treatment problems because it can function as a coagulant, flocculant,
recipitant and emulsion breaker. As a coagulant and flocculant, alum removes
turbidity, suspended solids and colloidal color, reduces biochemical oxygen
demand (BOD) and clarifies potable, process and wastewater.
Other Major Uses
In addition to the primary uses in the pulp & papermaking industry and for
water and wastewater treatment, alum is also used in:
| Cellulosic insulation |
Additive to cellulosic insulation |
| Clay manufacturers |
China clay beneficiation |
| Dyes |
Mordant for dyes |
| Grease manufacturers |
Manufacture of aluminum soaps and greases |
| Industrial wastewater treatment |
Sewage and industrial wastewater treatment, emulsion breaking |
| Manufacture of alumina trihydrate and printing inks |
Manufacture of alumina trihydrate for lakes and color extenders |
| Municipal wastewater treatment |
Clarification and phosphorus removal |
| Potable and process water treatment |
Color and turbidity removal |
| Pulp and paper mills |
Process water and mill effluent treatment.
Paper sizing |
| Soap manufacturers |
Manufacture of glycerin from soap lyes |
| Swimming pools, oil well operators, manufacturers |
Water treatment |
| Tanneries |
Tanning furs and white leathers |
| Zeolite and catalyst manufacturers |
Manufacture of zeolites and aluminosilicate catalysts and carriers |
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All statements, information, and data given herein are believed to be
accurate and reliable but are presented without guaranty, warranty or
responsibility of any kind, express or implied. The user should not assume
that all safety measures are indicated or that other measures may not be
required. All suggestions made herein are intended for use by persona
having requisite knowledge and skill, and are to be used at their own risk.
General Chemical assumes no responsibility for this information, and
potential purchasers waive all claims they may have and agree to indemnify
and hold harmless General Chemical from any claims or damages they may later
allege relative to their reliance upon these suggestions.
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