【Process Introduction】：The water content of mineral tailings can be declined under 15%. Compared with the traditional tailing disposal technology, the cost saving is over 2 yuan/t. The working life of tailings dry stacking equipment is twice of traditional equipment, and the maintenance cost is lower. The mine applying tailings dry stacking technology was rated as Green Mine many times.
【Application Scope】：Xinhai tailings dry stacking technology is mainly applied to the dewatering and concentrating of mineral tailings in the mineral processing plants. To reach the aim of tailings dry stacking and avoiding environmental pollution, it is the essential technology of green mine.
Using three kinds of patent equipment in dewatering in proper order: Xinhai concentrated type hydrocyclone + high-efficiency deep-cone thickener + high-efficiency high-frequency dewatering screen. The final concentration is over 85%, realizing dry stacking.
Tailings dry stacking technology reduces the equipment investment and construction investment with unique equipment combination. Xinhai patent equipment has a good effect on dewatering, with low energy consumption. The working life is highly extended, and the operation cost is further decreased.
The inner liner of tailings dry stacking technology is Xinhai wear-resistance rubber. The wear resistance index is up to 128%. According to the specific ore characteristics, different characteristics of rubbers are used. It has a wide range of applications. The working life of the whole production line is twice of the common production line. It greatly reduces manual maintenance. The maintenance cost reduces at least 2 yuan/t.
Xinhai tailings dry stacking technology uses three innovative national patent equipments, which provides strong support for tailing concentrating technology:
Xinhai concentrated type hydrocyclone has a siphon device on the upside. The downside has a fishtail device (The siphon and fishtail device both required the national patent). Through adjusting the siphon device, the downflow concentration can be adjusted, commonly about 75%. It largely reduces the investment of follow-up equipment in tailings dry stacking technology.
High-efficiency deep-cone thickener and multi-cone thickener install tilted plates in it, which increases the settlement area of thickener. The settlement area increases more than eight times, improving downflow concentration and capacity.
High-frequency high-efficiency dewatering screen has a unique sieve plate structure. Adding multi-frequency vibration of the motor, the mineral particles are not easy pass the sieve pore, and the dewatering efficiency is higher.
The capacity is 4000t/d. The granularity is 65% -200 mesh. The concentration is 30%, and the pH is neutral.
Main equipment | Number of equipment | Total power (kw) | Vulnerable parts and life | Products moisture (%) | Cost of production (yuan/t) |
Belt filter press | One Φ45-53m thickener | 700kw | Filter cloth | 14-18 | 6-8 |
Chamber filter press | One Φ45-53m thickener | 350kw | Filter cloth | 16-20 | 5-8 |
Ceramic filter | One Φ45-53m thickener | 600kw | Ceramic plate | 8-12 | 5-8 |
High-frequency dewatering screen | 2 Φ15m multi-cone thickeners | 220kw | Screen cloth | 15-20 | 2-4 |
A self-developed high-efficiency deep cone thickener, the underflow concentration can reach up to 70%.
Xinhai High Frequency Dewatering Screen is a uniquely designed tailings dewatering screen with large processing capacity and sufficient dewatering.
Xinhaili Hydrocyclone is a kind of involute feeding cyclone with world advanced level.
A dewatering equipment that uses the pressure of the slurry pump to make the liquid come out through the filter cloth. It is divided into a box filter press and a plate and frame filter press.
A vacuum filter with vertical discs consisted of fanning plates
A ceramic filter which relies on microporous ceramics for vacuum dewatering.
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