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Ecological improvement of lime production (COVEMI)

Project

Energy transition and resilient cities
Amélioration écologique de la production de chaux - Visuel
ACFAO
Project start date
Status

Completed

Estimated date of project termination
Project financing date
Financing duration
3 years
Type of program
FFEM
Global financing amount
247561 €
FFEM financing amount
125610 €
Project lead member institution(s)
French Ministry of Economy and Finance
Country and region
Burkina Faso
Type of financing
Grant
Beneficiaries
COVEMI – Compagnie Villageoise d’Exploitation Minière
Type of beneficiary
NGO, Foundation
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Economically viable lime production, using environmentally-friendly procedures based on a system for heating limestone through the recovery of agricultural waste (cashew nut shells – cashews)

The project forms part of a process for developing an eco-material sector in Burkina that helps to promote a sustainable bioclimatic habitat.

The project is being carried out in partnership with ACANTHE (Association for Advice in Innovative Architecture and Eco-Housing Techniques) in which the Village Mining Company (COVEMI) has a representative, and the development cooperation NGO RONGEAD, working to promote the sustainable development of agricultural sectors in synergy with environmental protection and the improvement of the living conditions of populations in developing countries.

The project consists of three parts:

  • Construct an ecological lime kiln, with a minimum capacity of 5 tonnes of lime per day, which improve the production of lime using modern technology, adapted to continuous operation. This over be more energy-efficient for the production of quicklime. Prior to its construction, simulators and a pilot  be able to test the ideal technical option to be used.
  • Adaptat a pyrolysis system and a post-combustion chamber in the new kiln. This system is operate using cashew nut shells to heat the lime instead of wood.
  • Install of equipment intended for the production of slaked lime: extinction of quicklime (tanks, truck mixer, water tower, blower), drying, packaging and storage on site.
  • The main impact of the project is to shift from wood to heat the lime and to produce the quicklime.
  • This change in the source of energy production makes it possible to improve the performance of the kiln and to increase its energy efficiency.
  • The process of extinguishing the lime also makes it possible to save water and to lessen the drudgery for workers.
  • The use of lime as a building material improves the thermal insulation of buildings and reduces GHG emissions related to air conditioning.
  • Socio-economic impacts, in terms of direct job creation, solicitation of the local private sector for the construction of the device, and improvement of the income of women potters through the diffusion of new techniques.