Microwave fluidized roasting-leaching method for reinforcing high phosphorous iron ore iron-extracting and phosphorus-reducing

A fluidized roasting and iron ore technology, which is applied in the field of mineral processing, can solve the problem that the separation index of high-phosphorus oolitic hematite is not significant, and achieve the development and utilization of resources and high efficiency, improvement effects, The effect of low energy consumption

CN109136540AActive Publication Date: 2019-01-04NORTHEASTERN UNIV

2 Cites 5 Cited by

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: NORTHEASTERN UNIV
Publication Date: 2019-01-04

Smart Images

Figure 1

Patent Text Reader

Abstract

The invention discloses a microwave fluidized roasting-leaching method for reinforcing high phosphorous iron ore iron-extracting and phosphorus-reducing. The method is performed according to the following steps: (1) preparing high phosphorous iron ore as a raw material; (2) grinding the ore after crushing, to obtain iron ore powder; (3) sending to a microwave fluidized roasting furnace, and roasting in a reducing atmosphere condition; (4) after levigating the roasted ore, performing low intensity magnetic separation; (5) performing acid leaching dephosphorization by using sulfuric acid, afterthe acid leaching dephosphorization, filtering and separating a solid material; washing the solid material, and drying. The method is capable of realizing efficient comprehensive utilization of the high phosphorous iron ore, high in iron grade and recovery rate, remarkable in phosphorus-reducing effect. A technology is more energy-saving and cost-reducing, and the iron-extracting and phosphorus-reducing effect is more remarkable. Recycling and efficient development and utilization of high phosphorous oolitic hematite are realized.

Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of mineral processing, and in particular relates to a microwave fluidized roasting-leaching method for strengthening iron ore and phosphorus reduction of high-phosphorus iron ore. Background technique

[0002] The total amount of iron ore in my country is large, but a large number of "poor, fine, miscellaneous" weak magnetic iron ore resources have not been effectively developed and utilized. Among them, oolitic hematite resources have reserves of more than 10 billion tons, accounting for about 100 million tons of domestic iron ore. 12% of the total reserves of resources, accounting for 30% of my country's hematite reserves, Hubei Exi Iron Mine, Hebei Xuanlong Iron Mine, Hunan Ningxiang Iron Mine, Guangxi Tunqiu Iron Mine, etc. are all oolitic hematite types; Oolitic hematite is mainly composed of oolitic, kidney-shaped and bean-shaped structures; oolitic grains have hematite (or quartz, clay minerals) as the ...

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