Plastic Linings, Plastic Liners, UHMWPE, Flowline, HDPE, Groupline Projects (Pty) Ltd

In order to bridge the gap between the abrasion resistant and flow enhancing liners the patented Line-OX SF composite alumina ceramic tiles were developed to combine the wear resistant properties of alumina with a low friction characteristics of glass. The wear properties of densely sintered alumina ceramics (typically in excess of 90% alumina) are well known and this product has established an excellent reputation in a wide range of applications where its resistance to sliding abrasion is superior to 500 BHN plates by as much as a factor of eight.

The low friction characteristics of glass have been widely used to overcome blockages, ratholing, arching and plugging in chutes bins and silos.

In standard alumina ceramic lining applications the surface friction may be too high to permit material to flow over the surface. Material either builds up and blocks or merely acts as a dead box with material flowing over itself. In the Line-OX SF composite tile a sacrificial glass coating is fused to the surface of the ceramic tile at a high temperatures. At these temperatures the glass phase reacts with the alumina substrate to form a durable chemical bond. This surface, although very hard itself, acts as a flow initiator allowing material for flow and as this sacrificial layer wears the ceramic substrate then has the opportunity to polish to a smooth finish in the immediate wear zone.

Successful Applications
- Duff Coal
- Boiler Ash
- Concentrate
- Slag
- Fine Iron Ore

FLOWLINE - Ultra High Molecular Weight Polyethylene (UHMWPE) linings System FLOWLINE

FLOWLINE is a strong wear resistant material with a low friction co-efficient making it an ideal solution for lining chutes, hoppers bunkers and silos. Professionally installed FLOWLINE can be relatively maintenance free even extending the working life of materials handling plant.

Various installation methods offer a range of cost effective solutions from simple bolting to rubber backed stick in type liner, space frame construction and even welded FLOWLINE drop in liners or fabricated chutes.

With a very low friction co-efficient and zero water absorption FLOWLINE linings are widely used to eliminate caking, bridging and hanging up of a variety of bulk materials in application extending through steel and cement production, mining an power generation. In new applications the use of FLOWLINE liners facilitates shallower chute and hoper angles providing greater design freedom whilst in existing installations the simulation of steeper angles through a low friction co-efficient is often the solution to plant blockage problems.

Unique Features		Benefits
Abrasion Resistance	•	Outwears steel 6:1
Chemical Resistance	•	Resistant to most industrial acids, alkalis and solvents
	•	Will not rust
Nil Moisture Absorption	•	Non Absorbent
Low Coefficient of Friction	•	Handles the worst of bulk materials, assist in smooth, predictable flow
Lightweight	•	Weights 1/8th that of steel
Easily Machined	•	Cut and drill with basic power tools
	•	Formable
Fastener Selection	•	Wide range available for different conditions
	•	Weldable
	•	Space fame construction offers large costs saving
High Shock Strength	•	Rated non-break, even at -269ºC

Glass Flowtile liners

Low friction glass liners economically facilitate bulk material flow

Flowtile glass low friction liners, provide a maintenance-free cost-effective solution from the lining of hoppers, bunkers and silos. With the lowest coefficient of friction under both wet and dry conditions FLOWTILES effectively improve the free flow of bulk materials, reduce abrasion, prevent arching, bridging, ratholing and adhesion.

Specifications

-	10 mm thick float glass is bonded to concrete or steel structures with specially formulated FLOWTILE adhesive.
-	Both the FLOWTILE material and FLOWTILE adhesive are manufactured in accordance with ISO 9002.
-	Repeated tests in applications ranging from coal to lime and granulated slag have shown glass has the lowest coefficient of sliding friction under both wet and dry conditions.
-	Tiles are generally 300x300 mm.
-	Tiles are staggered in the direction of material flow to prevent gouging at the joints.
-	Glass has an MOH hardness equivalent to steel.
-	Glass is non-combustible with working temperatures up to 150ºC, will not propagate fires, will provide insulation and protect structural materials.
-	Liners have a density of 25 kg per m².

Unique Features		Benefits
Glass has the lowest friction coefficient of all lining materials	•	Linings are the most cost-effective method of improving material flow in bunkers and silos to eliminate bridging or ratholing
Glass is locally produced	•	Glass is the most cost-effective lining material available
Glass is supplied and fitted as individual tiles	•	Tiles can be cut on site to any shape required to fit the contours thus obtaining 100% vessel coverage
	•	Tiles facilitate quick, easy repairs
Tiles are completely bedded into the bunkers, silo or hopper walls	•	Water ingress is avoided thereby eliminating erosion or corrosion
Glass is hygienic	•	Linings do not lift with the force of bulk materials entrapped behind them
Glass has good corrosion and erosion resistant	•	Food products are not contaminated

Ceramic and Basalt Liners

Wear resistant tile lining

Groupline projects offer a full range of alumina ceramic and cast basalt tile linings designed to protect against the effects of abrasive and erosive wear.

Wear resistant ceramics
The benefits of alumina ceramic linings have been well established with all industries from power generation to mining and cement manufacture both locally and internationally.
Various grades of alumina are available to suit specific wear, corrosion, or other requirements and can be engineered or moulded to specific shapes.
Group Line Projects has been supplying and installing alumina linings and components since it’s inception in 1991 to all the major South African corporations including Eskom, Amcoal, Iscor, Sasol, Alpha and Ingwe to name a few. Specific references are available on request.

Typical lining applications

Industries: Power Generation, Steel and Alloy Production, Chemical and Paper, Cement Manufacture, Mining, Metallurgical and Mineral Extraction, Sugar, Grain, Textile etc.

Equipment: Chutes, hoppers, silos feeders, mixers, centrifuge, pumps, pipelines, fans, screens, scrapers, cyclone, pulpers, launders, spiral, separators, concentrators, ducts etc.

Components manufactured: Cyclone spigots, scraper tiles, screens, wedges, guides, mechanical seals, welding ferrules, thermocouple sleeves, insulators, nozzles etc.

Typical hardness comparison:

Material	MOH Hardness
Alumina Ceramic	9
Cast Iron	4-6, 5
Carbon Steel	3-5
Cast Basalt	7
Glass	6

Group Line Projects (Pty) Ltd range of “Pulley Line” Alumina ceramic pulley lagging tiles

6 & 10mm thick 92% high alumina pulley lagging tiles – size 20mm x 20mm bonded directly onto the steel surface of the head or drive pulley with a specially formulated high strength epoxy resin adhesive. Advantages of using “Pulley Line” Pulley Lining System

	92% Pulley Line Tiles • Extremely hard extending the life of your head pulley reducing costly downtime • “Pulley Line” drive pulleys are lined with a studded tile for grip reducing belt slippage Corrosion Free System • The pulley line tile will not rust and is inert to most chemicals and acids • The epoxy resin bonding system seals & protects the outer steel casing of the head pulley

Pulley line can be applied to almost any size pulley, from 200mm in diameter upwards. Plain, smooth alumina pulley lagging is available for lining of non-drive pulleys. Group Line Projects (Pty) Ltd also supply and install a range of hi-wear epoxy resin liner systems for conveyor pulleys. All head pulleys are prepared and lined in our Johannesburg workshops, Jet Park, Boksburg. Please call us for any further information that you may require.

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