Preventing wear of conveyors for abrasive bulk goods

Experience and Commitment The main business of Sinfines y Maquinaria S.A. (Sinfimasa) is to understand the customer and design and manufacture conveyors according to project requirements and the specifications of the solid material to be handled. At our facilities in Guissona (Spain), we have our own engineering department with over 35 years’ experience, where we design machines that meet our customers’ technical specifications and make our commitment to their engineering project. We offer solutions for conveying and lifting bulk solids with uncompromising quality and precision, and we ensure equipment reliability in every situation in the processing plant. Safe, Robust, Reliable In our production plant we manufacture products with all types of finishes as required: pickled and passivated, electro-polished, lacquered, sandblasted and food-grade, etc. We work with different materials such as carbon steel, stainless steel and anti-wear steel. We use high quality and universally available components such as SEW gearmotors or SKF bearings. Our suppliers are also key to our success and we make a commitment to them. We have a test bench where, based on product samples from our customers, we research the best solution for the requirements of each project. We are committed to our customers and engineering companies to offer machines with guaranteed reliability. Sinfimasa has welding procedures and welders approved according to ASME Section IX (QW-484). We use an automated welding system to ensure that the entire length of the conveyors are welded evenly and are free from voids. At Sinfimasa we are rigorous and demanding, with numerous references in several countries on all five continents as our guarantee. Please ask us for more information as you require. Consult us about your project on no obligation. We will make you a reliable technical proposal that is 100% adapted to your requirements.

Sinfimasa designed three chain conveyors for the transport of SRF. Sectorization of two fire zones was important, so one of the conveyors was equipped with firewall slide gates. Solid Recovered Fuel (SRF) is a fuel prepared from non-hazardous waste, and used for energy recovery in incineration and co-incineration plants. It consists of small fractions of waste with a high calorific value. This makes it also suitable for use in cement kiln installations. Our client is a non-hazardous waste valorisation plant, and needed to build a conveying line to deliver different types of SRF into storage boxes after shredding, separation and classification process. The required output was 150 m3/h. Transport in 3 steps To solve this need, Sinfimasa designed three chain conveyors; the first one would transport the SRF at a horizontal distance of about 10m and would elevate it to a height of 8m. The second conveyor is positioned horizontally over a distance of 4,7 m. An important function of this conveyor is to ensure the sectorization of two fire zones, so it was equipped with firewall slide gates. A third conveyor was designed and manufactured

Chain and screw conveyors versus belt conveyors. Sinfimasa manufactures chain and screw conveyors specifically for each customer and project. Which bulk material conveyor for which situation? Chain and screw conveyors versus belt conveyors There are several alternatives for conveying bulk materials. The most important of these are screw conveyors, belt conveyors and chain conveyors. Conveyors for bulk material should always be tailored to the situation: the movement path and the characteristics of the specific bulk material. Which type of conveyor is best for each situation? At Sinfimasa, we always say that the most important factor determining the choice of conveyor type is the product to be transported. Before the engineer defines the system, the properties of the product and conditions must be characterised. To mention are: the bulk density, grain size, abrasiveness, corrosivity, the temperature at which it will be transported, the power required, the degree of clumping, hygroscopicity, etc... Depending on the product and the configuration of the process or plant, one device will be better than

Sinfimasa designed a double auger with screw conveyors and a bucket elevator for a difficult material, consisting of very different fractions. Heterogenous material On this occasion, our client is a waste treatment plant that needed to transport fine particles from a shredding machine. The bulk material to be transported was very heterogenous: it consisted of 60% rubber and plastics, 15% glass, soil and minerals, 10% textiles and wood, 10% paints and oxides, and 5% metals. The material flow was 7 tonnes per hour, with a grain size of 0 to 20 mm, a density of 600 kg/m3, and a moisture content of 10 to 15%. Closed screw conveyors A conveyor belt was difficult to use, as spillage of material would cause an environmental problem. The solution was to design a system of closed screw conveyors that prevent the spillage of product. In addition, it also avoids manpower in the route and possible accidents with rollers and drums of a conveyor belt. Robust and maintenance friendly To ensure efficient extraction from the hopper that stores the material to be processed and to prevent product accumulation, Sinfimasa

The handling of bulk solids, especially aggregates and other hard minerals requires highly robust and reliable conveyor equipment. Sinfimasa designs equipment based on product properties. Robust equipment The handling of bulk solids, especially aggregates and other hard minerals requires highly robust and reliable conveyor equipment. Its 100% tailor-made manufacturing is the most recommended in this sector to offer to the engineering companies the most suitable components and features for the user’s working conditions and ensure maximum performance and return on investment. Maximum reliability Total adaptation to customer needs means, not only maximum reliability conveyors to reduce facilities downtime, but also the maintenance costs by assembling top quality brands preferred by the user which are freely accessible in the market, as is the case of motor-reducers, bearings, or instrumentation (motion, temperature, deviations sensors). Proven technology Having proven experience and references, as well as a test bench for testing the behavior of the client’s material, will help the success in the design of the conveyor to be manufactured. At