Flash-evaporation-free digestion system for gibbsite

By using a flash-free leaching system, direct liquid-liquid heat exchange and cascade heat recovery, the problems of complex equipment and low energy efficiency in existing technologies are solved, achieving equipment simplification and improved energy utilization efficiency, thereby enhancing the economic and environmental benefits of alumina production.

CN224172468UActive Publication Date: 2026-04-28GUIYANG ALUMINUM MAGNESIUM DESIGN & RESEARCH INSTITUTE CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202520855089.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-04-28
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

In existing trihydrate gibbsite bauxite processing technologies, pipeline flash leaching technology suffers from complex equipment, high power consumption, high operation and maintenance costs, low heat utilization efficiency, and scaling problems, resulting in low system energy efficiency.

Method used

The system adopts a flash-free leaching system, eliminating multi-stage flash evaporators and related equipment. It uses direct liquid-liquid heat exchange between high-temperature and low-temperature slurries, combined with an insulation retention system, to achieve cascaded heat recovery and heat source reuse, reducing equipment investment and operation and maintenance costs.

Benefits of technology

Simplify the process flow, reduce equipment power consumption and operation and maintenance costs, improve energy utilization efficiency, reduce new steam consumption, extend equipment cleaning cycle, and enhance economic and environmental benefits.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses a gibbsite flash-evaporation-free dissolution system which comprises a heat exchanger A1, a cold source outlet of the heat exchanger A1 is connected with a cold source inlet of a heat exchanger B2 through a pipeline, a cold source outlet of the heat exchanger B2 is connected with a cold source inlet of a heat exchanger C3 through a pipeline, and a cold source outlet of the heat exchanger C3 is connected with an inlet of a heat preservation staying system through a pipeline. An outlet of the heat preservation staying system is connected with a heat source inlet of the heat exchanger A1 through a pipeline, and heat source inlets of the heat exchanger B2 and the heat exchanger C3 are further connected with a heat source. According to the flash-free system disclosed by the utility model, a multi-stage flash evaporator, a secondary steam condensate water tank, a water cooler, a matched vacuum system and the like as well as related pipelines and accessories for connecting the equipment and the system are omitted, so that the power consumption of the equipment and the corresponding investment and operation and maintenance cost are reduced, and meanwhile, the heat dissipation loss of the system caused by the links is also eliminated. Therefore, the energy utilization efficiency is improved, the consumption of fresh steam is reduced, and the economic benefits and environmental protection benefits of the whole dissolution process are improved to a certain extent.
Need to check novelty before this filing date? Find Prior Art