Process for production of sorbents based on smectite for uptake of liquids

US5402752A · kind A · utility

Assignee

• Sud-Chemie A.G. · DE

Inventors

• Reinhard Hahn · Vilsheim, DE
• Otto Haubensak · Brannenburg, DE

Key dates

• Filing date: Dec 20, 1993
• Grant date: Apr 4, 1995
• Expiry date: Dec 20, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K3/32
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of sorbents based on smectite for uptake of liquids. This process is characterized in that: PA1 (a) a smectite with a water uptake capacity of less than 115% (in terms of the dried smectite with a residual water content of 6 wt.%) and a smectite content of around 40-65 wt.% and/or PA1 (b) a two-layer silicate is/are mixed with an alkaline smectite and the mixture homogenized in moist condition by intensive shearing, the mixture is gently dried, and the dried mixture is fragmented.