Case Study
17 February 2016
CDE Delivers New Mobile Sand Washing Plant in East Africa
“We are very proud to own CDE Global’s first Combo X70 Mobile Washing Plant in Tanzania”,
explains Darpan Pindolia, Director of Dar es Salaam-based Estim Construction, one of the
largest civil and building companies in East Africa. “Estim Construction builds high-rise buildings
so ensuring highest quality, strength and consistency in our concrete production is crucial.
“This new CDE Global installation, which we understand is the most advanced plant of its kind
in East Africa, has enabled us to optimise production and maximise our return on investment
through consistency in feed rate, with the added bonus of giving us the edge over our
competitors.”
A testimony to the growing awareness in the quarrying industry of the multiple benefits of sand
washing, the partnership between CDE Global and Estim Construction in Dar es Salaam was a
labour of love and an exciting breakthrough in the African market. From humble beginnings 25
years ago in the form of a small truck, Estim Construction have grown to become one of the
largest and most respected companies in Eastern and Southern Africa, with headquarters in Dar
es Salaam, Tanzania and sister offices in Zambia and Mozambique. Estim Construction’s
dedication to excellence and innovation mirrors the CDE work ethos, so developing the most
efficient sand washing solution was a gratifying process resulting in a product that surpassed
Estim Construction’s expectations.
As the company now enjoys optimised quality and increased productivity, the future looks bright.
Communication of initial needs with CDE Global was made easy as their South Africa-based
Business Development Manager was always available to talk without time zone constraints or
for a visit to the customer’s site. In-depth conversations followed, based on observations made
during site visits, and effective communications with all relevant sections of the company led to
the identification of specific requirements and to a unique sand-washing solution to be
developed, focusing on Estim Construction’s priority of two different sands and maximum
recycling of processed water.
Key to the success of CDE Global is having representatives based at the heart of each region of
the world, who understand the specificities of the sand washing sector in their area and can
relate to the customer’s needs. Their current Johannesburg-based representative has been
sharing his expertise with companies throughout Sub-Saharan Africa for over eight years,
providing customer care and expertise to the sand, aggregate and mining industry.
Nicolan Govender, CDE Global Regional Manager for Africa, comments: “A CDE Combo X70,
an integrated sand washing and water recycling system which uses 90% less water than
traditional sand washing systems, was approved by Estim Construction as their solution of
choice. Bespoke additions or modifications were applied to meet their circumstances and
requirements.
“To ensure that Estim Construction had complete ownership of their operation, a CDE engineer
trained an Estim Construction operator to oversee the installation and take actions based on the
changing characteristics of the feed material.
“The plant is fed 50 tons per hour to produce 40 tons per hour of final quality washed sand.
Waste and water from the EvoWash report to the AquaCycle high-rate thickener so that up 90%
of the water is recycled and reused. The concentrated fines are flushed out, resulting in minimal
water replenishing the water tanks.”
The new CDE sand washing plant for Estim Construction has now been running for two
successful years. Estim Construction’s Director Darpan Pindiola concludes: “We could not be
happier with the choice we made. Working with CDE Global, and especially their Business
Manager and engineers, has been a crucial factor in achieving the best final product.
“Thanks to our CDE Combo X70 we can now complete orders for various grades of concrete
required for rafts, columns and slabs to produce paving blocks and other items in the knowledge
that we will always meet our clients’ deadlines and produce consistent quality and output
throughout the washing process.”
Combo X70 Mobile Washing Plant