ONIS EQUIPMENT GROUP
SCREENING BUCKETS
DO YOU HAVE PILES OF TOPSOIL, PEAT, COAL, DIRT OR COMPOST? – A SCREENING BUCKET IS JUST THE RIGHT ATTACHMENT TO PROCESS YOUR MATERIAL.
REMU screening buckets have a long history dating back to the late eighties. Recent models have gone through rigorous development. Our customer-focused development process keeps us on track and ensures continuous improvement which helps us to create products that solve real material processing problems and fulfil customers’ requirements.
Screening Buckets
WHAT CAN YOU PROCESS WITH A SCREENING BUCKET?
Screening buckets are most commonly used to prepare topsoil, compost, and recycle. The screened fraction obtained can be classified as clean, high-quality soil free of oversized stones, etc. Buckets can also be used to mix sand, clay, and compost to achieve the desired consistency required for a specific use.
SCREENING ORGANIC WASTE
Screening buckets can process various organic materials. This bucket in Spain is used for screening and crushing biomass which is a waste stream output from the olive oil production process.
– Material: industrial waste stream including fruit stones, sticks and leave
– Objective: Crush & screen the material for feeding biomass boilers
– Bucket model: EE4290
– Blade model: 4304
– Blade thickness and spacing: 16 mm /24 mm
Screening Topsoil
Preparing topsoil with screening buckets has long been a common application in northern countries and is becoming more frequent in other areas as well. The benefits of processing materials on-site instead of transporting them are also recognised in the USA. Producing topsoil is one of the most common applications. With our blade screen technology, you can separate stones, wooden sticks, and other unwanted particles from the soil. Blades also mince up the lumps in the material.
– Material: topsoil
– Objective: Separate the stones, sticks, and other oversized particles to prepare the topsoil for landscaping. Maximum particle size 28 mm
– Bucket model: EP 4150
– Blade model: 2001
– Blade thickness and spacing: 16 mm/34 mm
Aerating and Mixing Compost
Mixing and aerating organic waste piles will speed up the composting process. More aggressive blades, such as screening-crushing blades, break the material into smaller particles to catalyse the process. The composition can vary from very moist to dry, depending on the type of material and how advanced the composting process is. In the early stages of the process, a bucket with very large gaps between the blades can be used to mince up particles and aerate the material, whilst later in the process, the compost can be screened using a bucket with narrow blade spacing between the screening blades to separate any remaining oversized particles from the end product. The screening buckets are compact and are easy to bring inside any composting installations.
– Material: Dried and composted sewage sludge
– Objective: Remove remaining oversized particles from composted material
– Bucket model: EP 4150
Recycling Demolition Waste
Onsite processing of demolition waste reduces the amount of material sent to landfill. The PD 3160 was used at the demolition site of an old hospital in the UK.
– Material: Gravel, construction waste
– Objective: Separating oversized particles and preparing the material for reuse onsite
– Bucket model: PD 3160
– Blade model: 4304
– Blade thickness and spacing: 16 mm /24 mm
Coal processing
Screening buckets with aggressive blade models can easily process coal and break it down into smaller particles. In the UK, coal was processed with the EE 4220, the second largest of our bucket models.
– Objective: screening particle size for further use
– Bucket model: EE 4220
– Blade model: 4311
– Blade thickness and spacing: 16 mm/ 74 mm
Gypsum Processing
Gypsum board recycling often requires crushing the material to a smaller particle size. In the USA, gypsum is crushed with a Remu XO2150 bucket equipped with screener-crusher blades. The crushed material is then reused as an agricultural soil additive.
– Objective: Crush recycled gypsum board for further use
– Bucket model: XO2150 with SC module
– Blade model: 2304
– Blade thickness and spacing: 10 mm/ 20 mm | 3/8″minus
Soil stabilisation
Adding stabilising agents like fly ash, lime fly ash, cement, or other stabilisers can enhance soil characteristics to meet the required engineering specifications. With our screening buckets, the stabilising can be done on-site by mixing just the right amount of stabiliser with the soil.
THE OPERATING PRINCIPLE OF SHAFT SCREENS
REMU screening buckets have between 2 and 4 rotators powered by hydraulic motors. The spinning motion of the rotators and the carefully designed shape of the blades create a movement that effectively separates the fine material, which drops through the bucket, from oversized particles, which remain inside the bucket. Because of this up-and-down movement, even material that is moist and thus hard to process with vibrating or sifter screens is easy to process with the REMU blade screens.
BLADE DESIGNS
REMU’s blade designs can be divided into three groups: 1) Screening blades genuinely the materials without breaking up large particles thus avoiding them passing into the screened product. 2) Aggressive blades are designed to mince and break up materials like glass, roof tiles, and root lumps. 3) Block shafts are designed to mix or aerate material and are used for coarse screening.
COUNTER BLADES
Comb counter blades are designed purely for screening and separating the material, while aggressive counter blades are used for rough material and to help mince up the particles and lumps.
CLEANING SCRAPERS
Blade screen technology is the best choice for moist materials. Rotating blades move the material up and down while cleaning scrapers constantly clean sticky material off the shafts.
FREQUENTLY ASKED QUESTIONS ABOUT REMU SCREENING BUCKETS
REMU screening buckets can be fully loaded, giving you more capacity at each scoop, while Trommel-style buckets can only be filled to 1/3 of the bucket volume.
Processing one bucket load takes approximately one minute. This includes the whole cycle of processing, starting with loading, screening, and emptying out the oversized particles. Depending on the bucket size, capacities can be in the range of 10 m³/h—250 m³/h per hour.
One operator, one machine, and a screening bucket is an unbeatable combination when compared to what it takes to run a screening plant. By investing in a screening bucket, you save on investment and operating costs, as well as fuel, maintenance, and equipment transportation costs.
A reliable and robust structure keeps your machine running, saving you time and money in operation and maintenance. Shafts are made of the highest quality steel, giving you the longest possible service life (much longer than other buckets with rubber stars or blades made from lower-quality steel).
Our wide selection of models and professional sales team help guarantee that you will get the most suitable screening bucket and shaft configuration for your machine, the material you process, and the end result you require.
The buckets’ design considers that clients may be working on asphalted surfaces, and the bottoms of our buckets are reinforced with wear plates.
It is very easy to learn how to operate a screening bucket. We supply a user manual with instructions for the correct use of the bucket, and we will be happy to answer any questions you may have.
When comparing larger screening plants to smaller or average-size screening buckets, some screening plants process more material per hour than screening buckets. However, a screening plant needs a wheel loader or an excavator to feed it, so you are running two machines and may need a second operator. In many cases, the hourly production of the right model of screening bucket is the same as a screening plant, but the size of the initial investment and the operating costs are just a fraction of the size. With a screening bucket, productions of 250 m3 per hour are possible.
Basic maintenance, or even changing the rotors, is easy to perform in any workshop. Daily maintenance consists of greasing the lubrication points for the bearings. Our aftersales service provides detailed instructions for all the maintenance.
MULTIPLE SERIES FOR EACH UNIQUE APPLICATION
SCREENING BUCKET SERIES
