Pre-design work of the concentrator

2.1 Enterprise Construction Planning

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2.2 Project Proposal

1. Purpose and tasks of the proposal

The project proposal is the initial phase of the capital construction process. Beneficiation plant project proposal is based on the sector (industry) planning or construction of enterprise planning, major issues of principle for the proposed project through research. Such as resource situation, market demand, construction scale, product plan, external conditions, infrastructure investment, construction effect, existing problems, etc., to make preliminary argumentation and evaluation, according to the necessity of project construction. Provide a basis for the initial decision of the project. The approved project proposal is also the basis for the feasibility study work.

2. Content of the proposal

The contents of the project proposal generally include:

(1) The basis and necessity of the construction project;

(2) Resources;

(3) Results and evaluation of the ore dressing test,

(4) Preliminary plans for the construction scale, process principle process, main equipment, product plan and users of the beneficiation plant;

(5) A preliminary plan for the construction site and a review of the external conditions;

(6) construction investment, preliminary estimates of the number of workers, raise funds envisaged;

(7) Preliminary opinions on the construction schedule;

(8) Preliminary estimates of economic and social benefits;

(9) There are problems and suggestions,

(10) The traffic location map of the attached factory area and the floor plan of the plant area;

(11) Projects on the introduction of technology and imported equipment should state the technical overview and gaps at home and abroad, the reasons for import, the possibility of using foreign capital and the ability to repay, and make a preliminary analysis of the introduced countries and manufacturers.

2.3 Feasibility study

1. Purpose and mission of the research

The feasibility study is based on project proposals approved by the higher authorities. The feasibility study is a scientific analysis method to evaluate whether the construction project is technically and economically feasible. It is an important work in the early stage of design. Its purpose is to confirm the comprehensive effect of project investment through in-depth technical and economic argumentation, and provide a reliable basis for the correct decision-making of construction projects. The approved feasibility study report is also the basis for determining the construction project and preparing the design documents.

The basic task of feasibility study for the construction of a concentrator is a matter of principle in construction. Such as resource conditions, construction scale, principle process, major equipment, product plans, market demand, site, external conditions, infrastructure investment, construction progress, economic effects, competitiveness, etc. Therefore, conclusions are made as to whether the concentrator is constructed or not.

2. Basic data and content required for research

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2.4 Design Task Book

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2.5 Site selection and tailings facilities

1. Significance and basic principles of site selection

The site selection of the ore dressing plant (including tailings ponds, water sources and living areas, etc.) directly affects infrastructure investment, construction progress, post-production production and economic effects, and regional environmental and agricultural production. Therefore, it is a very policy-oriented work in the early stage of design. . The choice of site must implement the principles and policies of China's industrial construction, meet the process requirements, and reflect the long-term rationality of production and life.

(1) The site of the ore dressing should be as close as possible to the mine.

(2) The topography of the site should meet the needs of the beneficiation process.

(3) Implement the principle of land conservation.

(4) The volume of the tailings pond should be compatible with the scale of the concentrator and the length of service.

(5) The site of the ore dressing plant should be as close as possible to the water source, reducing the length and energy consumption of the water pipeline; when determining the water source, special attention should be paid not to compete with agriculture.

(6) The concentrator must have a reliable power source. Where conditions permit the use of power grid power supply, it should be used as much as possible, and the length of the transmission line should be shortened as much as possible.

(7) Select the site to consider appropriate transportation conditions.

(8) The beneficiation plant should avoid construction on the ore body, magnetic anomaly area, collapse limit and blasting danger zone.

(9) The site of the ore dressing plant should have good engineering geological conditions. The building should be avoided on faults, landslides and flood levels. Avoid caves, silt, humus, potholes, ancient wells and other bad areas. Cultural relics protection zone.

(10) Pay attention to environmental protection. The site of the concentrator should be selected as far as possible in the downwind direction of the town or residential area. The well considers the “three wastes” treatment conditions to minimize the pollution of dust, smoke and other emissions to the environment.

(11) The location of the living area of ​​the beneficiation plant should be selected on the principle of favorable production, convenient living and full cooperation.

(12) According to the situation of mine resources, when the scale of the ore dressing plant is expanded, the site should have room for development.

2, tailings facilities

The tailings of the ore dressing mainly refers to fine-grained water tailings. The tailings facility system for treating fine-grained water tailings is composed of four parts: tailings pond, tailings conveying system, backwater conveying system and tailings water purification system.

2.6 Design requirements for geological exploration and ore dressing tests

1. Depth and requirements of geological exploration work

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2. Depth and content of mineral processing test work

The scale of the test is divided into: optional test; laboratory test; laboratory extended continuous test; semi-industrial test; industrial test

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