Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A vanadium ilmenite and pretreatment technology, applied in the field of metallurgy, can solve the problems of poor economy, difficulty in wide-scale promotion, waste of titanium resources, etc.
Inactive Publication Date: 2017-08-22
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF4 Cites 11 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
More importantly, the blast furnace-converter process can only recover the iron and vanadium in the vanadium-titanium magnetite concentrate, and the titanium element enters the blast furnace slag. Due to the low grade of titanium (TiO in blast furnace slag 2 content of 22% to 25%), there is still no effective way to use it, resulting in a waste of valuable titanium resources
[0005] In addition, industrial applications include direct reduction-electric furnace melting process to process vanadium-titanium magnetite. For example, New Zealand Steel Company and South Africa Highveld Steel Vanadium Company all use rotary kiln direct reduction-electric furnace melting process to process vanadium-titanium magnetite Mine, this proc
Method used
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
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0035] Using vanadium-titanium iron concentrate as raw material, the main components and mass percentage of vanadium-titanium-iron concentrate are shown in Table 1, and the particle size distribution of the vanadium-titanium-iron concentrate is shown in Table 2, and Table 1 shows the The main components and content of the concentrate, Table 2 is the particle size distribution of a certain vanadium-titanium iron concentrate:
[0036] Table 1 The main components and content of a vanadium-titanium iron ore concentrate
[0037]
[0038]Note: TFe is the total mass percentage of iron elements in the sample.
[0039] Table 2 Particle size distribution of a vanadium-titanium iron ore concentrate
[0040]
[0041] The reducing agent is anthracite coal powder. The main chemical composition content and particle size distribution of anthracite coal powder are shown in Table 3 and Table 4 respectively. Table 3 shows the main components and content of anthracite coal powder, and Tabl...
Embodiment 2
[0054] Using vanadium-titanium iron concentrate as raw material, the main components and mass percentage of vanadium-titanium-iron concentrate are shown in Table 1, and the particle size distribution of the vanadium-titanium-iron concentrate is shown in Table 2.
[0055] Anthracite coal powder was used as the reducing agent, and the main chemical composition content and particle size distribution of the anthracite coal powder are shown in Table 3 and Table 4, respectively.
[0056] (1) Roasting pre-oxidation of vanadium-titanium iron concentrate
[0057] The above-mentioned vanadium-titanium iron concentrate was oxidized and roasted at 1000°C for 1.0 h to obtain a pretreated product. The content of FeO in the vanadium-titanium iron concentrate after oxidation and roasting was 1.04%, and the S content was 0.083%. The removal rate is 88.47%;
[0058] (2) Blocking of mixed materials
[0059] The pretreatment product is proportioned with anthracite coal powder and bentonite and ...
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
PUM
Login to view more
Abstract
The invention provides a vanadium-titanium iron ore utilization method. The vanadium-titanium iron ore utilization method comprises the following steps of conducting oxidizing roasting pretreatment on vanadium-titanium iron ore, so that a pretreatment product is obtained; mixing the pretreatment product with a carbonaceous reducing agent and a binding agent, so that a mixed material is obtained; conducting agglomeration and drying on the mixed material, so that carbon-containing pellets are obtained; conducting reductive carbonization on the carbon-containing pellets, so that a metalized material is obtained; and conducting physical separation on the metalized material, so that an iron-enriched material and a titanium-enriched material are obtained. According to the vanadium-titanium iron ore utilization method, oxidizing roasting pretreatment is conducted on the vanadium-titanium iron ore, the ore phase structure of the vanadium-titanium iron ore is changed, and the difficulty of reduction and carbonization of titanic oxide is lowered; and meanwhile, most of the element sulfur in the vanadium-titanium iron ore is removed, quality of vanadium-titanium iron ore preparation products is improved, and the application scope of the vanadium-titanium iron ore is widened. It is indicated through experimental results that the removal rate of sulfur is 79% or above; titanium in the titanium-enriched material exists in the form of titanium carbide, the mass content of the titanium reaches 24% or above, and the titanium can serve as a raw material for producing titanium tetrachloride through a chlorination process; and the mass content of total ferrum (TFe) in the iron-enriched material reaches 88% or above.
Description
technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for utilizing vanadium-ilmenite ore. Background technique [0002] Vanadium-titanium magnetite is a compound ore in which iron, vanadium, titanium and other valuable elements coexist. Among them, vanadium has many excellent physical and chemical properties, known as the metal "vitamin", and has a wide range of applications. Covering many fields such as aerospace, chemistry, batteries, pigments, glass, optics, and medicine. Titanium has stable chemical properties, high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance, and high strength and low density physical and chemical properties. It can be alloyed with iron, aluminum, vanadium or molybdenum and other elements to produce high strength. Light alloys are widely used in aerospace, military, chemical, automobile, agricultural food, medicine, kitchen utensils, sportin...
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
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
IPC IPC(8): C21B13/00C22B34/12C22B1/02C22B1/245
CPCC21B13/006C22B1/02C22B1/245C22B34/1218
Inventor 秦洁刘功国齐建玲李占军
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Login to view more 
Login to view more