Objective
Objectives and content
The gold ores considered as difficult to be processed
include mainly complex ores in which matrix minerals are
sulfides and sulfoarsenides, sometimes associated with
copper minerals. The conventional process is the
cyanidation, which involves for environment and workers
some hazards (emissions of gaseous cyanhydric acid and
liquid wastes).
The objectives of the project are:
to carry out cyanidation in a closed horizontal stirred
grinding mill (HSGM) fed with pumps. The overflow
hazards, which could appear with a conventional ball
mill, should be prevented; moreover, the HSGM behaving
like a quasi-perfect mixer, leaching times and volumes of
liquids should be significantly reduced;
to accelerate cyanidation using catalysts;
to complex gold with reagents other than cyanide
(thiourea and chlorine) of which the effectiveness in
laboratory tests is ascertained but which, in a
conventional technology at industrial scale, are hindered
by the passivation of the gold particles surfaces; that
passivation may be prevented in a stirred mill owing to a
permanent attrition.
The planned investigation consists of:
comparing the technology proposed at laboratory and
pilot scales with the conventional technology in which
grinding in a ball mill and leaching in agitated tanks is
operated successively;
proposing and testing new process flowsheets;
evaluating the process economy.
For that purpose, 3 typical gold materials will be used:
an arsenopyrite flotation concentrate; a gravimetric
mixed concentrate containing free gold and copper; mining
wastes and residues from a roasting and cyanidation
processing operations.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences inorganic chemistry inorganic compounds
- natural sciences chemical sciences inorganic chemistry halogens
- natural sciences chemical sciences catalysis
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
78600 Maison-Laffitte
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.