{"id":3076,"date":"2026-07-10T00:00:33","date_gmt":"2026-07-09T16:00:33","guid":{"rendered":"https:\/\/www.hexinfiltermachine.com\/?p=3076"},"modified":"2026-07-10T16:02:42","modified_gmt":"2026-07-10T08:02:42","slug":"mine-tailings-treatment-solution-from-dewatering-to-dry-discharge-epc-planning","status":"publish","type":"post","link":"https:\/\/www.hexinfiltermachine.com\/es\/mine-tailings-treatment-solution-from-dewatering-to-dry-discharge-epc-planning\/","title":{"rendered":"Mine Tailings Treatment Solution From Dewatering to Dry Discharge EPC Planning"},"content":{"rendered":"

Mine tailings treatment<\/a> has become a critical part of modern mining operations. For many mines, tailings are no longer simply sent to a pond after mineral processing. Instead, operators are looking for safer, cleaner, and more cost-effective ways to reduce water content, recover process water, lower pond pressure, and move toward dry discharge. A complete mine tailings treatment solution should not start with a single filter machine. It should begin with material testing, site investigation, process design, equipment selection, installation, commissioning, and long-term technical service. For mining companies planning a tailings dewatering or dry discharge project, EPC planning can help connect every stage into one practical and reliable system.<\/p>\n

 <\/p>\n

\"Mine<\/div>\n

Why Is Tailings Treatment Important for Modern Mining Projects?<\/strong><\/h2>\n

The way tailings are treated has a bearing on the safety of production, on the water, on the land and on costs to operate as well as on the continuity of a project. When the tailings slurry is too wet it can demand very large storage facilities. It can place a very large management burden and it can lead to medium to long-term environmental and safety problems. Many mining companies are moving from the traditional slurry discharge method to thickening, to filtration, to water recovery and to so-called dry discharge.<\/p>\n

Reducing Tailings Pond Pressure<\/strong><\/h3>\n

Traditional tailings ponds are large land using facilities that require on-going monitoring. As a mine\u2019s production capacity increases so does the pressure on existing tailings ponds. The process of Tailings Dewatering reduces the water content of the slurry thereby converting it into a lower moisture filter cake. This form of tailings is much easier to transport, to stack, to backfill and to even reuse.<\/p>\n

For mines with limited real estate and or stringent tailings management programs, reducing slurry in mines is often the main driver for a dry discharge system.<\/p>\n

Improving Water Recovery<\/strong><\/h3>\n

Water is required in great quantities in the mining industry and the subsequent processing of the mined minerals. By thickening and filtration the part of the water in the tailings slurry can be re-used in the process. This ensures that the demand for fresh water can be reduced to a minimum. In cases where water is scarce or too expensive, this will even stabilize the plant\u2019s operation.<\/p>\n

Supporting Safer Site Management<\/strong><\/h3>\n

Dry discharge tailings are easier to handle than high-water-content slurry. Filter cakes can be easily transported in dry form by belt conveyor or by truck and can be stockpiled in a designated area or used for backfilling as required by the operation. The dry form of tailings gives greater control to the operation in managing the tailings.<\/p>\n

What Are the Main Steps in a Tailings Dewatering and Dry Discharge Process?<\/strong><\/h2>\n

A tailings treatment system is typically designed as a complete process rather than as a single piece of equipment. The best approach to treatment will depend on several key factors including the properties of the material being treated, the size of the particles, the concentration of the slurry, the daily tonnage, the desired level of moisture and the method of disposal.<\/p>\n

Tailings Testing and Classification<\/strong><\/h3>\n

Before selecting equipment, a mine should provide engineers with a few samples of tailings or some basic information about the material. We then check for a few key parameters such as a particle size distribution, a solid concentration, a mineral type, a slurry viscosity and a pH value, and if any reagents are needed.<\/p>\n

When a tailings stream contains a mixture of coarse particles and fine slurry, classification may be required to enable the coarse fraction to be separated ahead of the thickeners and filters and to reduce their treatment load.<\/p>\n

Thickening Before Filtration<\/strong><\/h3>\n

In most of the tailings dry discharge systems, thickening is a key step before the material goes through filtration. A high-efficiency thickener can enhance the concentration of solid in the slurry, decrease the volume of free water going into the downstream processing equipment and also facilitate efficient filtration.<\/p>\n

Return overflow from thickener to processing plant, send underflow to filtration. The design of the thickening stage can be important to reduce the load on the filters and to increase stability of overall system.<\/p>\n

Filtration and Filter Cake Formation<\/strong><\/h3>\n

Filtration is the key process step to transform the high-moisture content tailings slurry, that has been concentrated in a previous step, into a lower-moisture content filter cake. A variety of equipment types are used, including belt filters, belt filter presses, ceramic filters and vertical press filters.<\/p>\n

Belt filter presses are generally best suited for continuous operation at higher throughput than ceramic filters which can be applied in certain mineral tailings applications where lower moisture, better automation and more efficient operation are critical. For projects that require a very low moisture filter cake, a Vertical filter press may be the best choice.<\/p>\n

Dry Discharge and Conveying<\/strong><\/h3>\n

The filtered tailings can be discharged from the filter as a filter cake on a belt conveyor and stockpiled as dry tailings, transported to a lower water content Tailings Ponds, or used for backfilling and for closure\/recovery applications. The method for move and stack of such solids will depend on the specific design to match the site topography, desired moisture content, and operating rate.<\/p>\n

 <\/p>\n

\"Mine<\/div>\n

Which Equipment Is Commonly Used in Mine Tailings Treatment?<\/strong><\/h2>\n

Selecting the correct equipment for a tailings treatment project is key to a successful project. Given the diversity of mines currently in operation, it is likely that each will require a variety of equipment to achieve their objectives. Therefore, the EPC plan must be tailored to the specific process and all the relevant equipment selected accordingly.<\/p>\n

Espesador de alto rendimiento<\/strong><\/h3>\n

A espesante de alta eficiencia<\/a> is used to concentrate tailings slurry and recover clear water. It can reduce the volume of slurry sent to filtration and improve downstream performance. In tailings dry discharge projects, the thickener often works together with reagent dosing, slurry distribution, and water return systems.<\/p>\n

Belt Filter Press<\/strong><\/h3>\n

A filtro de cintur\u00f3n<\/a> press is typically used for continuous solid-liquid separation. Large volumes of slurry can be processed by the belt filter press to produce a filter cake which can be discharged as a solid or conveyed away from the process. In tailings applications of high daily capacity, a belt filter press can form part of the dry discharge process.<\/p>\n

Ceramic Vacuum Filter<\/strong><\/h3>\n

Ceramic vacuum filters<\/a> are applied in many mining and tailings dewatering projects. They can be automatized, due to their design, in order to achieve lower filter cake moisture on suitable materials, while at the same time it reduces the operating cost of the plant. In projects that treat fine mineral tailings or a technology upgrade is required, ceramic filters can be a good option after the relevant laboratory work is conducted.<\/p>\n

Vertical Filter Press<\/strong><\/h3>\n

Vertical filter press \/ tower press filter<\/a>. For projects where lower moisture and higher pressure filtration is required. Such applications demand highest filter cake quality.<\/p>\n

How Should an EPC Plan Be Built for Tailings Dry Discharge?<\/strong><\/h2>\n

A mine tailings EPC project should integrate the engineering design with the real site conditions. If not properly planned, a system could easily fall into a low capacity, high moisture, unstable operation or frequent maintenance problem.<\/p>\n

Site Investigation<\/strong><\/h3>\n

The initial step is a site investigation. Engineers investigate the location of the tailings, the route of the slurry pipeline, available land and sources of power and water as well as the route that the water will take, the location of equipment and the elevation of the site as well as climate. The amount of space that will be required for future expansion is also investigated.<\/p>\n

By not completing a site investigation, even though the correct equipment could have been selected on paper, the equipment can still be difficult to install and operate at the actual mine.<\/p>\n

Process Design<\/strong><\/h3>\n

Process design outlines the flow of tailings from slurry discharge through thickening, filtration, water recovery, filter cake transportation and dry stack mine discharge. It covers reagent addition, slurry distribution and the control system. It also covers access for maintenance.<\/p>\n

Process design is critical to avoid excess equipment, energy waste and ensure each step in the process is compatible.<\/p>\n

Equipment Manufacturing and Matching<\/strong><\/h3>\n

Once the process has been determined it is possible to manufacture or design the equipment required to complete the process. This must take into account the design criteria of the project as well as the properties of the slurry being processed, the desired moisture content as well as site constraints. A number of key design parameters must be considered simultaneously including thickener size, filter area, number of filter units required, required pump capacity and the required conveyor configuration.<\/p>\n

In large projects it is crucial to match the equipment correctly. A thickener that is too small can lead to instable filtration. Also a filter with too low a capacity can be a bottleneck and limit the rest of the production line.<\/p>\n

Installation, Commissioning, and Training<\/strong><\/h3>\n

The real EPC project does not stop at the factory gate. Proper installation guidance, commissioning assistance, operator training and adequate after sales service are as important as design. In the course of the commissioning engineers may have to adjust slurry concentration, reagent addition, filter speed, vacuum, pressure and discharge method until a stable operation of the system is achieved.<\/p>\n

What Can Be Learned from Hexin\u2019s Tailings Treatment Cases?<\/strong><\/h2>\n

There are Real project cases which could provide better understanding of how a specific tailings treatment could be implemented in practice. Below Yantai Hexin Environmental Protection Equipment Co., Ltd provides several examples of completed tailings and solid-liquid separation EPC projects. Each of them describes specific objectives of a project as well as the used equipment.<\/p>\n

Phosphor Mine Tailings Filtering and Filling EPC Project<\/strong><\/h3>\n

Our services for the Phosphor mine tailings filtering and filling EPC project included: survey, design, production, installation with operational instructions; post-sales service with individual attendance. The processed slurry was phosphor tailing slurry. There were several Double Belt Material Discharge Vacuum Horizontal Belt Press units, Filtering additive machines and a Flocculant Agent Charging device among other equipment.<\/p>\n

This case highlights the importance of tailings treatment planning that meets the requirements for filtration and filling as well as after sales service.<\/p>\n

Iron Tailings Recycle, Sand Making, and Dry Discharge EPC Project<\/strong><\/h3>\n

The Heibei Nanshan Group iron tailings EPC project includes recycling of tailings, sand making, dry tailing discharge and recycling. The project has a processing capacity of 10,000 tons per day and covered the EPC services from the beginning including the process design, equipment manufacturing, installation and commissioning.<\/p>\n

This process includes magnetic tailing recovery, sand washing, thickening, filtration, addition of reagents, and water recycling. This process can be equipped with magnetic tailing recovery machines, wheel sand washing machines, high-efficiency thickeners, belt filter presses, slurry separators, and automatic reagent feeders.<\/p>\n

A good case to study when more than just dewatering is required. The design for recovery, for classification, for return of water, and for dry discharge.<\/p>\n

Gold Flotation Tailings Dry Discharge Upgrade Project<\/strong><\/h3>\n

The scope of work for the gold flotation tailings dry discharge technology upgrade project was designed to process 1300 tons per day of dry bulk material with the following specifications: down to 200 mesh with 60% passing. Two BF-120\u2033 ceramic vacuum filters were used to upgrade the existing filtration system.<\/p>\n

The results of this project consisted of increased automation, of a far better manner of cleaning of the ceramic plates, of higher capacity, of lower filter cake moisture, of lower labor cost, of lower maintenance cost, and of lower energy cost. This case is particularly interesting for existing dewatering operations which would like to increase their capacity and their efficiency.<\/p>\n

Why Choose Yantai Hexin Environmental Protection Equipment Co., Ltd as a Filter Supplier?<\/strong><\/h2>\n

Yantai Hexin Environmental Protection Equipment Co., Ltd is a high-tech enterprise located in YEDA of Yantai City, Shandong Province of China. The company is a professional manufacturer, research and development, sales of filtration equipment with more than 20 years\u2019 experience in filter industry.<\/p>\n

Filtration Equipment Experience<\/strong><\/h3>\n

Hexin\u2019s main products are: belt filters, ceramic filters, vertical filter press, high-efficiency thickeners and EPC projects. They are used in mining, metallurgy, chemical, fertilizer, medicine, food, paper, sewage treatment, tailings treatment, etc., industries.<\/p>\n

EPC Project Capability<\/strong><\/h3>\n

For mining customers, Hexin can provide services over and above supplying the required equipment. For each of the cases that Hexin has managed to complete from scene investigation and process design through to manufacturing, installation, start up and after sales service, Hexin can provide a complete tailings treatment solution.<\/p>\n

Practical Service for Mining Projects<\/strong><\/h3>\n

We look to work with filter suppliers that can assist our customers in eliminating problems with \u201cunmatched\u201d equipment, contain risk for projects, and enable best long term operation for them. Some of the tailings treatment projects carried out by Hexin are designed to process phosphor tailings, iron tailings, gold flotation tailings and other kinds of industrial slurry. Process routes are developed accordingly for different types of materials.<\/p>\n

Conclusion: What Is the Best Path from Tailings Dewatering to Dry Discharge?<\/strong><\/h2>\n

A successful mine tailings treatment plant is designed as a complete system. It includes material testing and site investigation, thickening and filtration as well as wet and dry discharge. Water to be reused is recovered. Installation and commissioning also need to be perfectly planned in order to achieve the desired performance.<\/p>\n

Yantai Hexin Environmental Protection Equipment Co., Ltd., EPC specialist for slurry discharge conversion to dry discharge, can help to avoid equipment mismatch, to increase water recovery, to decrease pressure on tailings ponds and to operate in a more stable way. Based on the company\u2019s experiences with belt filters, ceramic filters, vertical filter presses, high-rate thickeners and tailings treatment in EPC-projects, the company is able to support mines from dewatering to dry discharge in a competent manner.<\/p>\n

Preguntas frecuentes<\/strong><\/h2>\n

What is mine tailings dry discharge?<\/strong><\/h3>\n

Mine tailings dry discharge is the method of removing most of the water from a tailings slurry by thickening and filtering it to produce a dry filter cake. This dry material can then be stacked, transported, backfilled, or otherwise processed as required.<\/p>\n

Which filter is suitable for mine tailings dewatering?<\/strong><\/h3>\n

Filter options are based on the size of the particles in the tailings, the concentration of the slurry, the daily volume of tailings, and the moisture content being targeted. Site-specific constraints must also be considered. Common types of filters used in this context are the belt filter press, ceramic vacuum filter and vertical press.<\/p>\n

What information should be provided before requesting an EPC proposal?<\/strong><\/h3>\n

buyer has to provide us with sufficient information on the tailings material and also the rest of the information such as daily capacity, slurry concentration, size of the particles, moisture content to be achieved, site information, power information, water information etc. and also let us know whether the buyer requires only the machinery or whether the buyer requires EPC solution for the entire plant.<\/p>","protected":false},"excerpt":{"rendered":"

Mine tailings treatment has become a critical part of modern mining operations. For many mines, tailings are no longer simply sent to a pond after mineral processing. Instead, operators are looking for safer, cleaner, and more cost-effective ways to reduce water content, recover process water, lower pond pressure, and move toward dry discharge. A complete […]<\/p>\n","protected":false},"author":2,"featured_media":3072,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/posts\/3076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/comments?post=3076"}],"version-history":[{"count":1,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/posts\/3076\/revisions"}],"predecessor-version":[{"id":3077,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/posts\/3076\/revisions\/3077"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/media\/3072"}],"wp:attachment":[{"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/media?parent=3076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/categories?post=3076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hexinfiltermachine.com\/es\/wp-json\/wp\/v2\/tags?post=3076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}