Finedoor  Ltd is a family owned and run business which has been established for over 25 years. The business is comprised of a dynamic group of professionals with one aim - to provide bespoke quarry and recycling solutions to our customers.

With a customer base across the whole of the UK and Ireland from the major quarry groups through to the single site owner operators plus international sales in territories including Middle East, West Africa and India. The sales vary from the supply of spares through to replacement and new machines to the design, detail and supply of all necessary components for new, or upgraded plants.

In order to provide turn-key solutions Finedoor has established a portfolio of partners that has enabled them to offer a broader portfolio.

As a result of this an agreement was reached with SOTRES S.A. of France to distribute their range of sand washing and effluent treatment equipment in the UK

SOTRES Sand Plants:

SOTRES has been a specialist in washing and preparing concrete sands in quarries and pits for more than 25 years.

SOTRES designs and manufactures sand washing units based on samples analysed in their laboratory or on the results of analyses supplied by the client.

These elements mean that they can offer units designed to meet quality requirements (particle size, curve, cleanliness).The sand processing units are composed of modular elements which mean that they can produce standard assemblies for the simplest installations or adapt the sand processing units to suit each site's requirements and the matter to be treated.

Working principle:

The water and sand are collected in the tank. The pulp which is conveyed by a centrifugal pump feeds the cyclone tangentially. The centrifugal movement inside causing liquid-solid separation. The clay, waste and ultra-fine particles are removed by suction by the overflow. Centrifugal force makes the solids and heavy elements spiral down the cone, which are rejected onto the dewaterer.

Featuring a rising slope and fitted with two vibrating motors and slotted screens, the dewaterer track makes the sand move along its whole length. The outlet chute collects the dry sand and dewatered undersize elements return to the tank. Offering all possible permutations these modules can also stand completely alone to meet installation requirements, in particular for modifying existing installations.

Processing requirements may result in the need for: single, double or triple stage cycloning, with or without technical separation. These specifications are determined from analyses of the products to be processed and the results to be achieved.

Current Installations:

Earlier this year Finedoor installed the first mainland SOTRES compact 80tph for Lightwater Quarries at their Potgate Quarry near Ripon. Well established, the quarry supplies a hard magnesian limestone for road construction and other applications throughout Yorkshire.

With a busy operation of this nature it was of prime importance that the processing plant operates efficiently; however it had become apparent that the existing screw/bucket dewatering unit was losing fine sand to the settling lagoons. It was therefore decided after consultation with Finedoor that it would be beneficial to replace the inefficient unit with a modern hydro cyclone sand treatment unit.

With a requirement that the new unit must recover 100% passing 150 micron Finedoor guaranteed the performance and offered a suitable unit which was available for immediate delivery from their sand processing and water treatment partner SOTRES SA in France.

Installed during a holiday period initial grading taken after a few days after commissioning reflected excellent results, with tests on the waste water indicating nothing passing 75 micron was entering the lagoons.

Capable of producing up to 80tph the SOTRES unit supplied is a compact sand plant featuring a galvanised dewatering screen unit which is supplying a single grade of sand. Finedoor also supplied a Warman pump specifically supplied ‘one size up' to minimise wear. Finedoor engineers commissioned the sand plant and all the civils were provided by Lightwater engineers.

Kevin Parker - General Manager, commented, "It was clear to me that SOTRES have plenty of experience in sand plant design and their confidence in their product made the purchasing decision easy. Finedoor gave good support and ensured the plant would slot into place in the short shutdown period and despite the bitter weather everything went to plan."

STOP PRESS:

Finedoor has just installed and commissioned a SOTRES Quarry Waste Water Treatment Plant for a client in Yorkshire. Designed to eliminate the on-site lagoon the plant will effectively deal with specified rates of waste water and mud from the wash plant and is specifically designed for low maintenance and running costs.