industrial extraction of precious and rare metals
from solutions
with low concentration
invention profile
Abstract. The technology
allows to provide profitable industrial extraction of precious and rare metals
(Au, Ag, Pt, Pd, Re etc.) from solutions with low concentration in the presence
of ions of other metals, in particular, from clear solutions of tailing dumps of gold recovery plants, industrial
salt solutions, salt solutions of potassium production, hydrothermal springs,
water of saline lakes, if concentration of mentioned metals is more than 20 mg/m3. Feasibility and
efficiency of the technology is proved experimentally, technology is well
prepared for fast industrial applications and has no competitors. Use of the
technology allows extracting tens of tons of precious and rare metals. Owners
of the technology are interested in industrial applications of the invention by
sale of rights on its use or mutual
industrial applications of the invention.
Short description
of invention. Invention is related to hydrometallurgy of
precious and rare metals, in particular, to processes of extraction of Au, Ag,
Pt, Pd, Re etc. from solutions with low concentration in the presence of ions
of other metals, in particular, from clear solutions of tailing dumps of gold recovery plants, industrial
salt solutions, salt solutions of potassium production, hydrothermal springs,
water of saline lakes.
Method
and device for extraction of Au, Ag, Pt, Pd, Re etc. from solutions with low
concentration in the presence of ions of other metals by their case-hardening in
reduced form on leaded zinc powder, separation of concentrate and its melting
is that solution, containing precious and/or rare metals (hereinafter PRM) with
low concentration in the presence of ions of other metals passes through leaded
zinc powder, lead concentrate, containing precious and/or rare metals, is
separated from zinc powder by intense mechanical agitation, concentrate is
processed by acid, sediment of PRM is filtrated, dried and melted with fluxing
agents, obtaining crude metal.
Advantages of the
technology. Offered technology has significant
competitive advantages, because for the first time in the world it allows to
organize profitable extraction of PRM from solutions with low concentration. In
process of case-hardening of metals of Zn-adsorbent presence of
high-mineralized chloride solutions has practically no influence, extraction of
PRM reaches more than 70 %, filtration rate is high, operation of regeneration
of Zn-adsorbent is replaced by simple operation of removal of concentrate of
metals. Absence of competitive technologies allows reducing expenditures on
purchase of licenses on PRM extraction.
Experimental evidences of feasibility and efficiency of the invention. There exists semi-industrial unit, which
could demonstrate efficiency of offered technology on samples of concrete
waters. Owners of technology are also ready to demonstrate feasibility and
efficiency of the technology and unit on concrete objects, if concentration of
PRM is more than 20 mg/m3.
Feasibility
and efficiency of the invention are checked many times during experiments. For
example, 3 cm3 container is filled with
leaded zinc powder of class +
Readiness of
technology for industrial applications. The proposed
technology is ready for industrial applications. Part of necessary equipment is
produced in lots, part of equipment shall be designed, but it requires less
than 1 month. Consumable materials are produced and sold on industrial scale.
It is possible to organize acquisition and manufacturing of equipment and
consumable materials, as well as mounting of equipment on concrete object for
industrial extraction of PRM within 1,5 month.
General
characteristics of the unit. Unit for
filtration of solutions, containing PRM, is the module type unit: any
economically and technologically reasonable number of filtering units could
operate at one object. Space for one unit is 0,2 –
Some technical parameters of technology:
·
Applications
of the technology is economically feasible, if content of PRM in solutions with
low concentration is not less than 20 mg/m3;
·
Level of
extraction of PRM from solutions with low concentration according to the
technology is not less than 70 %;
·
Filtration
rate for solutions with content of PRM in amount of 20 mg/m3 is 4 – 20 tons per hour.
Fields
of application of the technology:
·
Extraction of Au from clear solutions of
tailing dumps of gold recovery plants. Each year gold
recovery plants of the world, which work using cyanic
technology (more than 92 % of plants al over the world), discharge
approximately 40 tons of dissolved gold in tailing dumps. During years of
operation of these plants hundreds tons of dissolved gold are accumulated in technogenic
lakes, and it could by profitably extracted according to proposed technology.
·
Extraction of Au from underground
industrial salt solutions, which are evaluated in billions of cubic
meters.
·
Extraction of Au, Pt, Pd from salt
solutions of sludge depositories of potassium production.
·
Extraction of Au, Re, Ag from hydrothermal
springs,
in areas of high volcanic activity.
·
Extraction of Au from high saline lakes.
Legal protection of
the invention. The
invention is protected by the RU patent application on the invention “Method of
extraction of precious and rare metals from solutions with low concentration in
presence of ions of other metals and device for its realization” No 2088126691.
Priority date is July 02, 2008. Applicants are two persons.
Offer. We’ll consider
licensing or outright sale of the invention or mutual industrial applications
of the invention. More detailed information about the invention is at request.
Contact. Vitaly Pilkin, phone: +7 985 222
55 45 (Moscow, Russia), E-mail:info@vcpartners.biz
NOTE. All Information is presented under the conditions that (a) nothing
disclosed by us will create any obligation or restriction on your Company or
its subsidiaries or affiliates (including an obligation of confidentiality);
(b) you will be free to use or not to use anything, including information
received from us without any compensation, subject to any rights we have
acquired based on the patent application No 2088126691, submitted to the Russian Patent
Office.