Comprehensive utilization method for boron-extraction and iron-extraction tailings of ludwigite

A technology of mafic ore and iron tailings, which is applied in the field of comprehensive utilization of secondary resources, can solve problems such as environmental pollution and waste of resources, achieve high purity, realize zero discharge of solid waste, and simple process technology
CN113060741AActive Publication Date: 2021-07-02CENT SOUTH UNIV
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2021-07-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a comprehensive utilization method for boron-extraction and iron-extraction tailings of ludwigite. The method comprises the following steps: carrying out high-temperature and high-pressure water leaching on magnetic separation tailings, and filtering a product obtained after water leaching to obtain a leachate and leaching residues; introducing CO2 gas into the leachate, and separating borax and sodium carbonate crystals out from the leachate through evaporation, concentration and fractional crystallization; forming and sintering the leaching residues to prepare a magnesium refractory material; carrying out high-temperature and high-pressure water immersion in a closed environment, wherein the water immersion temperature is greater than or equal to 150 DEG C. The method has the characteristics of simple process flow, high production efficiency, high added value of products and the like. Zero emission of solid waste and efficient recovery and utilization of boron and sodium are achieved, technical support is provided for efficient value-added utilization of ludwigite resources rich in reserves in China, and the method has very wide application and popularization prospects.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of comprehensive utilization of secondary resources, and relates to a method for comprehensive utilization of boron and iron tailings from mafic ore. Background technique

[0002] Boron mafic ore accounts for 57.88% of my country's boron resources, and the boron ore reserves in Liaodong alone reach 280 million tons, of which B 2 o 3 The reserve is 21.84 million tons, which belongs to the large boron deposit. Magnesite resources are currently the main body of boron resource development and utilization in my country, but the grade is low (average B 2 o 3 :7%~8%), the mineral composition is complex, the crystal grain size is fine and uneven, and it is difficult to select and smelt. At present, the treatment process of boron mafic ore in my country is as follows: magnetic-gravity separation to obtain boron concentrate, iron concentrate and tailings, about 40% of B 2 o 3 Into boron concentrate, 30% B 2 o 3 into bor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More