Drag Chain Conveyors

Drag Chain Conveyors are ideal in transporting powdered and dusty materials. These types of materials are common ingredients or results of processes in places such as copper and nickel smelters, chemical and fertilizer factories, soda recovery plants and power plants. Other applications for drag chain conveyors are transportation of soft and light materials, i.e. saw dust, wood chips or solid fuels like peat or coal. Continuous and efficient material flow is the key to a process without any unnecessary interruptions, thus ensuring high-quality end products and first-class profitability. With Kopar products you can economically and reliably feed, screen, crush and transport various types of materials, from wood chips to copper concentrate and from ash to hazardous waste.

FORGED CONVEYOR CHAINS AND COMPONENTS

Transported materials are often hot and extremely abrasive. This sets demands on the conveyor and most of all on the drag chain. By choosing the correct link and pin material, even the most abrasive and very hot (up to 600ºC) materials can be handled without problems. Forged links and connecting pins of drag chains are usually made of case hardened steel (cementation steel, 20MnCr5) or tempering steel (boron steel, 27MnCrB5). In special cases links or pins are manufactured of hardened stainless steel or heat resistant steel. We buy forgings only from reliable suppliers who are committed to provide us with flawless products as scheduled. All links are machined at Kopar workshop after which they are heat-treated by a sub-supplier. Finally the welding of flights and assembly work are carried out at our own workshop. In order to provide a quotation, we require the following information: chain type width of chain or width of conveyor type/shape of flights pitch of flights

Hazardous Waste Treatment

Kopar staff has participated in the project execution and manufacturing of nine European hazardous waste treatment plants which annually produce over 300 000 tons of wastes into stable and controllable form. For hazardous waste treatment plants Kopar offers Solid waste feeding devices Incineration kilns Secondary combustion chambers Wet slag conveyors Ash conveyors In the supply of large rotary drums and kilns, Kopar cooperates with Hollming Works. Hollming Works is a large Finnish engineering & manufacturing company, with a division in Parkano. In these joint projects Kopar takes care of the engineering, project management and commissioning, Hollming being the specialist in heavy fabrication and machining. The workshops of each company are located almost side by side which makes cooperation flexible and easy.

RAW WATER FILTRATION EQUIPMEN

KOPAR water treatment equipment consists of automated bar screens, travelling basket and drum basket filters. All are based on over 20 years experience in pulp and paper, power generation and chemical process industries where water screening is needed to produce cooling water. These filters are also used as the first process phase when surface water is pre-filtrated in municipal or industrial high quality water plants.

ROTARY DRYERS

Rotary Dryers are suitable for continuous drying of powdered minerals in mining, crushing, concentrating and flash smelting plants. In rotary dryers using the direct heating principle, heat is transferred to the material mainly by convection. Each drying application is an individual case and the sizing of the dryer is based on the long experience of similar applications and on the laboratory tests of drying. The rotary dryers are divided into two types depending on the flow directions of the dried material and drying gases. The choice between a concurrent and a counter-current drum is made according to the properties of the dried material Drying degree Specific heat Moisture evaporation capacity Flammability Sintering properties In the supply of large rotary drums and kilns, Kopar cooperates with Hollming Works. Hollming Works is a large Finnish engineering & manufacturing company, with a division in Parkano. In these joint projects Kopar takes care of the engineering, project management and commissioning, Hollming being the specialist in heavy fabrication and machining. The workshops of each company are located almost side by side which makes cooperation flexible and easy.

ROTARY TABLE FILTERS

Rotary Table Filters (RTF) are used to filter NaClO3 as well as other heavy salts and sludge, particularly when efficient multistage cake washing is necessary. The cake is formed by feeding solids and mother liquid to the feed box and by spreading the solids smoothly on the filter surface by an adjustable plough. The cake is washed in several lines and discharged by means of a screw and pressurized air. A thin layer of cake is left on the filter surface to form a pre-coat media, which improves filtering and protects the table surface. The filter is driven by a variable speed drive through a reduction and girth gear. The table runs on a horizontal guide roller bearing. The normal rotation speeds are 0,1 – 0,6 rpm and 0,2 – 1,2 rpm. The filter is also equipped with a tight hood into which hot air can be blown to raise the dry substance content. Kopar Rotary Table Filter is designed for easy running and to stand up to wear

SLAG CRUSHERS

Crushers can be used in crushing materials that are cloddy but still easily degradable. The crushers come in two types: rotor type, which is often used as a primary crusher and roller type, the secondary crusher after which the material can be pneumatically transported. Typical materials that are crushed by rotor and roller crushers are waste heat boiler slag, dust lumps and other materials with clods or lumps formed in the processes. Maximum capacity for these crushers is 20 t/h and when placed consecutively, first rotor crusher, then roller crusher, a final product of 5 x 5 mm can be achieved from a maximum feed size of 300 mm. Cooling by water, pressurized air or steam is possible when required.

VACUUM FILTERS

Kopar designs and manufactures two types of vacuum filters for solid – liquid separation. Construction material can be different types of stainless steel or titanium.