Rotary Drum Filters
The rotary drum filter was patented in 1872 and, since then, has been used extensively in the processing of chemicals, pharmaceuticals, cosmetics, and minerals. These filters have been proven to be versatile and they provide reliable continuous liquid/solid separation with minimum operator attention and maintenance. Drum filters are specifically designed to handle slurries that produce variations in cake thickness, moisture content and stickiness. The drum filter adapts to changes in feed rate and solids concentration and provides good performance and high production rates. There are a variety of discharge options available for drum filters including:
Scraper Discharge
Belt Discharge
String Discharge
Roll Discharge
Precoat Discharge
Coil Discharge
For chemical and mineral applications, Compositech frequently installs our drum filter station available with either the belt discharge, roll discharge, string discharge, or precoat discharge most often used in this industry.
The design is heavy duty, applicable for 24-hour continuous operation, and the filter is available totally enclosed. We provide different feed mechanisms and cake wash distributor designs depending on the operating conditions for each customer. Our drum filter is constructed of stainless steel with Compositech Hi-Flow drainage grids. All materials in direct contact with the sulrry, filtrate or cake are 304L stainless steel or PTFE.
Replacement parts we stock for other brands of drum filters include bearings, wear plates, worms, agitators, motors, valves, drives, scraper blades, discharge rolls and drainage grids. We regularly service and maintain a wide range of drum filters from various manufacturers supplying filter media of varied widths and drainage grids specified to fit each individual drum.
We produce and stock Compositech spare parts for Ahlstrom, Alar, Ametek, Dorr-Oliver®, Eimco®, Komline-Sanderson®, Peterson, Westech and most other brands of rotary drum filters. Our replacement parts meet or exceed the quality and material of OEM components.
Compositech is not an authorized replacement parts supplier or service supplier for GL&V®, Celleco™, Beloit Jones™, IMPCO™, Dorr-Oliver®, Komline-Sanderson®, or Eimco® brands of process equipment or parts therefore. Nor is Compositech in any way associated with GL&V USA Inc. or its affiliated entities or with FLSmidth A/S or its affiliated entities. All Compositech replacement parts are manufactured by and warranted by Compositech and not by the original equipment manufacturer.
Compositech Hi-Flow Drainage Grids
Compositech Drum Filter drainage grids are designed to offer superior flow in almost every drum filter application. Our Hi-Flow Drainage Grid features a wide open drainage pattern providing optimal flow characteristics without sacrificing filter cloth support. Our grids have approximately 90% open area on the back of the cloth. With tapered openings, the true open area of the grid is 65%, the highest in the industry!
Compositech grids are high pressure injection molded from engineering grade polypropylene. This material translates to greater service life making our grids the premier product for replacement of any O.E.M. drainage grid. Whether you operate an Alar, Ametek, Dorr-Oliver®, Eimco®, Komline-Sanderson, Peterson, Westech or any other rotary drum filter, Compositech Hi-Flow Drainage Grids are available for your filter.
Our drainage grids are available in standard size panels and have interlocking edges to insure continuous cloth support. They are produced in the following thicknesses:
1/2"
5/8"
3/4"
23/32"
13/16"
7/8"
1"
1 1/4"
The grids are ready for direct installation under the division strips or they may be notched to install flush with the division strips for scraper discharge filters. We precut and notch grids for our customers so the grids can simply be slipped into place. We also bond grids together to make larger panels. We have customers who use our grids bonded into panels up to 78" long.
Compositech offers the only full line of grids and grid preparation services available to all drum filter users. Our grids are generally cut and notched to customer specification and available for shipment within 48 hours of your order. Full un-cut grids in standard thicknesses can be shipped the same day your order is placed.