Method for preparing vanadium-iron intermetallic compound and titanium slag using linear moving bed pre-reduction-shaft furnace melting process

A technology of intermetallic compounds and linear movement, applied in shaft furnaces, furnaces, furnace types, etc., can solve problems such as difficult large-scale industrial applications, affecting normal operation of equipment, and low production efficiency, achieving high production efficiency, social benefits and Significant economic benefits and no environmental pollution

Inactive Publication Date: 2011-12-28
陕西延长石油中陕金属矿业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Rotary kiln-electric furnace method is difficult for large-scale industrial application because the rotary kiln is easy to form rings, which affects the normal operation of the

Method used

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  • Method for preparing vanadium-iron intermetallic compound and titanium slag using linear moving bed pre-reduction-shaft furnace melting process
  • Method for preparing vanadium-iron intermetallic compound and titanium slag using linear moving bed pre-reduction-shaft furnace melting process
  • Method for preparing vanadium-iron intermetallic compound and titanium slag using linear moving bed pre-reduction-shaft furnace melting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Step 1: Mixing

[0068] Mix vanadium-titanium iron mixed ore, polyanionic cellulose PAC (binder), anthracite (reducing agent) and tap water in a mechanical agitation ball mill (ZJM-20 periodic mechanical agitation ball mill) for 60 minutes to obtain a mixed charge;

[0069] Dosage: Add 5 kg of binder, 100 kg of reducing agent and 100 kg of water to 1000 kg of vanadium-titanium-iron mixed ore.

[0070] In the present invention, the composition of vanadium-titanium-iron mixed ore is (mass percentage): total iron (TFe) 50.28%, titanium dioxide (TiO 2 )20.64%, vanadium pentoxide (V 2 o 5 )0.42%, SiO 2 2.2%, MgO2.58%, CaO0.61%. see image 3 The XRD analysis figure shown.

[0071] Step Two: Make the Ball

[0072] The mixed charge is pressed into pellets (diameter 4 cm, thickness 3 cm) on a pellet forming machine (equipment model QT300), with a pressure of 50 MPa; pellet drop strength: 0.7 meters secondary without rupture; average pellet resistance Compressive strength...

Embodiment 2

[0098] Step 1: Mixing

[0099] Mix vanadium-titanium-iron mixed ore, carboxymethyl cellulose (bonding agent), charcoal (reducing agent) and tap water in a mechanically agitated ball mill for 30 minutes to obtain a mixed charge; the charcoal has a fixed carbon content of 96%, a particle size of 1mm.

[0100] Dosage: Add 3 kg of binder, 150 kg of reducing agent and 100 kg of water to 1000 kg of vanadium-titanium-iron mixed ore.

[0101] In the present invention, the composition of vanadium-titanium-iron mixed ore is (mass percentage): total iron (TFe) 50.28%, titanium dioxide (TiO 2 )20.64%, vanadium pentoxide (V 2 o 5 )0.42%, SiO 2 2.2%, MgO2.58%, CaO0.61%. see image 3 The XRD analysis figure shown.

[0102] Step Two: Make the Ball

[0103] The mixed charge is pressed into pellets with a diameter of 4 cm and a thickness of 3 cm on a pelletizing machine, with a pressure of 30 MPa; the pellet drop strength: 0.7 meters without breaking for the second time; the average com...

Embodiment 3

[0112] Step 1: Mixing

[0113] Mix vanadium-titanium-iron mixed ore, sodium humate (binder), petroleum coke (reducing agent) and clear mountain spring water in a mechanical stirring ball mill for 40 minutes to obtain a mixed charge;

[0114] Dosage: Add 4 kg of binder, 120 kg of reducing agent and 50 kg of water to 1000 kg of vanadium-titanium-iron mixed ore.

[0115] In the present invention, the composition of vanadium-titanium-iron mixed ore is (mass percentage): total iron (TFe) 50.28%, titanium dioxide (TiO 2 )20.64%, vanadium pentoxide (V 2 o 5 )0.42%, SiO 2 2.2%, MgO2.58%, CaO0.61%. see image 3 The XRD analysis figure shown.

[0116] Step Two: Make the Ball

[0117] The mixed charge is pressed into pellets with a diameter of 4 cm and a thickness of 3 cm on a pelletizing machine, with a pressure of 60 MPa; pellet drop strength: 0.7 meters without breaking for two times; average compressive strength of pellets: 1304.77 N / piece (measure 60 pellets in total);

[0...

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Abstract

The invention discloses a method for preparing a ferrovanadium intermetallic compound and titanium slags by a linear moving bed prereduction and shaft furnace melting process. The method comprises the following steps of: firstly, preparing the raw materials into a powder mixture; then pelletizing the powder mixture and carrying out drying processing on pellets; after carrying out prereduction processing on the dried pellets by a linear moving bed, feeding the pellets into a shaft furnace to carry out melting processing so as to obtain the ferrovanadium intermetallic compound and the titanium slags. The method disclosed by the invention has simple and controllable preparation process and low production cost.

Description

technical field [0001] The invention relates to a method for separating minerals, more particularly, a method for industrially producing vanadium-iron intermetallic compounds and titanium slag from vanadium-titanium-iron mixed ore. Background technique [0002] The feasibility of dressing and smelting of raw ore (gross ore) in different origins is not the same. Generally speaking, raw ore (gross ore) dressing and smelting can be roughly divided into two types. One is to obtain qualified iron concentrate and titanium concentrate that can be further processed in industry through ore dressing. Iron concentrate can be obtained through a certain amount of rich iron ore. Blast furnace smelting to obtain pig iron; titanium concentrate can be smelted through carbothermal reduction to obtain high-titanium slag, which can be further processed; another kind of raw ore (gross ore) with low grade and difficult to separate and smelt, it is difficult to obtain qualified raw ore through min...

Claims

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Application Information

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IPC IPC(8): C21B11/02C22B1/24C22B1/00
Inventor 卢惠民
Owner 陕西延长石油中陕金属矿业有限公司
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