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ACUMER™ 9000 Mineral Slurry Dispersant

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ACUMER™ 9000 Mineral Slurry Dispersant Technical Data ACUMER™ 9000 Mineral Slurry Dispersant Description ACUMER™ 9000 is a sodium salt of an acrylic acid-based polymer. It is a highly effective dispersant for aqueous calcium hydroxide and magnesium hydroxide slurries. Features and • Controlling phase separation Benefits • Reducing caking and clogging of equipment • Aiding the remixing of slurries after settling Typical Properties Property Typical Value Appearance Clear, light amber solution Total solids, % 44 pH 7.5 Density (lb/gal, @ 25°C) 10.8 Brookfield viscosity, (mPa.s/cps @ 25°C) 500 These properties do not constitute specifications. Performance Many problems can be encountered in producing calcium hydroxide or magnesium hydroxide slurries, including: • Wettability • Phase separation • Caking • Pumping • Pipe clogging • Remixing after setting • Slurry viscosity Calcium Hydroxide Figure 1 shows the efficiency of ACUMER 9000 as a dispersant for 30% calcium hydroxide slurry. Figure 1. ACUMER 9000 Dosage vs. Viscosity (30% Lime Slurry) Page 1 of 4 ®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Form No. 812-00352-0216BBI ACUMER™ 9000 / Dow Oil, Gas & Mining The following table shows the positive effect of ACUMER™ 9000 dosage on lime slurry stability. Lower dosage (0.2%) gives higher slurry viscosity and lower syneresis (liquid phase separation). The desired slurry properties can be controlled by optimizing the dispersant dosage. Effect of ACUMER 9000 Dispersant on 30% Lime Slurry1 Stability After 8 Days at Room Temperature Initial Make-Down Dosage, % (solids basis) Syneresis Gel3 Flowed4 Viscosity2 0.2 2080 1.7 98.3 93.3 0.4 810 12.0 88.0 97.1 0.6 382 16.5 83.5 96.3 130% lime slurry was prepared by mixing 210 grams of slaked lime with 490 grams of deionized water (including additives) for five minutes in a Waring blender at high speed. 2Brookfield RVT, #2 spindle, 20 rpm, 23°C 3Slurry phase 4Percent weight flowed when container is inverted for two minutes Magnesium Hydroxide Figure 2 shows the efficiency of ACUMER 9000 as a dispersant for 50% magnesium hydroxide slurry. ACUMER 9000 dispersant allows slurry properties to be maximized according to the mixing environment and the type of magnesium hydroxide. Figure 2. ACUMER 9000 Dosage vs. Viscosity (50% magnesium hydroxide slurry) Brookfield Viscosity, RVT, #2 @ 20 rpm, 23°C Ceramic Applications ACUMER dispersants benefit most ceramic applications whether it be kaolin slurries, ball clay Replacement for slurries, or ceramic slip grinding and dispersion. ACUMER dispersants aid in: Phosphates (STPP) • Wettability • Grinding • Slip viscosity • Slip stability Figures 3 and 4 show the relationship of slip viscosity versus slip solids for two ceramic tile manufacturers. In both cases, the ACUMER polymers outperformed STPP even at the higher STPP dosage, and the rapidly increasing cost of phosphates make the ACUMER polymer option even more attractive. Page 2 of 4 ®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Form No. 812-00352-0216BBI ACUMER™ 9000 / Dow Oil, Gas & Mining Figure 3. Ceramic Slip A – Effect of Slurry Solids on Viscosity Figure 4. Ceramic Slip B – Effect of Slurry Solids on Viscosity Figure 5 shows the relationship of specific gravity to solids for a typical ceramic slip. The ceramic mix was wet ground to 5% retained on 200 mesh screen. This relationship held for all dispersants tested on this particular slip. Figure 5. Ceramic Slip A – Effect of Slurry Solids on Slurry Density Page 3 of 4 ®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Form No. 812-00352-0216BBI ACUMER™ 9000 / Dow Oil, Gas & Mining Product Stewardship When considering the use of any Dow products in a particular application, you should review the latest Material Safety Data Sheets from Dow and ensure that they are intended for safe use. For Material Safety Data Sheets and other product safety information, contact Dow. Before handling any other products mentioned in the text, you should obtain available product safety information and take necessary steps to ensure safety of use. No chemical should be used as or in a food, drug, medical device or cosmetic, or in a product or process in which it may contact a food, drug, medical device or cosmetic until the user has determined the suitability and legality of the use. Since government regulations and use conditions are subject to change, it is the user’s responsibility to determine that this information is appropriate and suitable under current, applicable laws and regulations. Dow requests that the customer read, understand, and comply with the information contained in this publication and the current Material Safety Data Sheet(s). The customer should furnish the information in this publication to its employees, contractors and customers, or any other users of the product(s), and request that they do the same. The Dow Chemical Company Note: This guide is designed as a general product overview. Please contact your local Dow representative for up-to-date, detailed technical information including registrations and use limitations and to discuss individual applications or requirements. U.S., Canada and Mexico Toll Free 800 447 4369* NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and Latin America +55 11 5188 9222 applicable laws may differ from one location to another and may change with time, Customer is responsible for determining Europe whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s Toll Free +800 3 694 6367* workplace and disposal practices are in compliance with applicable laws and other government enactments. The product +32 3 450 2240 shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The Asia Pacific claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information Toll Free +800 7776-7776* in this document. References to “Dow” or the “Company” mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR +60 3 7958 3392 FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. Middle East (Dubai) +971 4 453 7000 North Africa (Cairo) +202 2 480 1466 Sub-Saharan Africa +27 11 575 1547 (Johannesburg) *Toll-free service not available in all countries www.dow.com/mining Page 4 of 4 ®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Form No. 812-00352-0216BBI ACUMER™ 9000 / Dow Oil, Gas & Mining.
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