Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oxygen electricity combined with calcium carbide smelting method

A combination of oxygen and electricity, calcium carbide technology, applied in the direction of carbide, calcium carbide, etc., can solve the problems that it is difficult to ensure that the reaction is fully completed and the grade of calcium carbide is low, and achieve the effects of shortening the smelting time, fast smelting process, and lowering the reaction temperature

Active Publication Date: 2018-01-05
WISDRI ENG & RES INC LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can increase the reaction rate and reduce energy consumption, it is difficult to ensure that the reaction is fully completed, and the grade of calcium carbide produced is relatively low.

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
  • Oxygen electricity combined with calcium carbide smelting method
  • Oxygen electricity combined with calcium carbide smelting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The embodiment of the present invention relates to an oxygen-electricity combined calcium carbide smelting method, comprising the following steps:

[0028] Step 1, preparing powdery carbon-based raw materials and powdery calcium-based raw materials, and drying the powdery carbon-based raw materials and powdery calcium-based raw materials. Wherein, in the process of preparing raw materials, the particle diameters of the powdered carbon-based raw materials and powdered calcium-based raw materials are controlled within the range of 0.07-1 mm, so that the carbon-based raw materials and calcium-based raw materials are in the form of fine powders with a high surface area. Activity, thereby enhancing the smelting rate of calcium carbide and reducing the reaction temperature. During the drying process, the weight percentage of the moisture in the powdered carbon-based raw material and the powdered calcium-based raw material is controlled below 0.3%, so that the carbon-based raw...

Embodiment 2

[0036] like figure 1 , the embodiment of the present invention relates to an oxygen-electricity combined calcium carbide smelting furnace 101, comprising a flash smelting furnace body 1, and a mixing nozzle 2 is arranged on the flash smelting furnace body 1, and the mixing nozzle 2 is connected with a powdery carbon-based Raw material supply mechanism, powdered calcium-based raw material supply mechanism and oxygen-containing gas delivery mechanism, powdery carbon-based raw material, powdered calcium-based raw material and oxygen-containing gas are sprayed into the flash smelting furnace body 1 through the mixing nozzle 2 The reaction forms an oxygen thermal reaction zone 3; the bottom of the flash smelting furnace body 1 has a molten pool in the reaction zone, and the molten pool in the reaction zone extends to one side of the flash smelting furnace body 1 to form a molten pool in the refining zone, and An electrode refining furnace body 9 is arranged above the melting pool i...

Embodiment 3

[0042] The embodiment of the present invention relates to an oxygen-electricity combined calcium carbide smelting system, including a calcium carbide smelting furnace 101. The calcium carbide smelting furnace 101 adopts the oxygen-electricity combined calcium carbide smelting furnace 101 provided in Embodiment 2, which will not be repeated here. The mixing nozzle 2 of the oxygen-electricity combined calcium carbide smelting furnace 101 is connected with a powdery raw material supply system 102 and an oxygen-containing gas delivery mechanism; the powdery raw material supply system 102 includes a powdery carbon-based raw material supply mechanism and a powdery calcium-based raw material supply mechanism, The powdery carbon-based raw material supply mechanism includes a carbon-based raw material pulverizing unit and a carbon-based raw material drying unit, and the powdered calcium-based raw material supply mechanism includes a calcium-based raw material pulverizing unit and a calci...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to an oxygen-electricity combined calcium carbide smelting method, specifically, preparing powdery carbon-based raw materials and powdery calcium-based raw materials, and drying the powdery carbon-based raw materials and powdery calcium-based raw materials; Raw materials, powdered calcium-based raw materials and oxygen-containing gas are sprayed into the melting furnace for flash smelting, and an oxygen thermal reaction zone is formed in the melting furnace. A CaC2‑CaO eutectic layer is formed in the molten pool; electrodes are inserted into the CaC2‑CaO eutectic layer for heating to form an electrode refining area; the molten pool at the electrode refining area is discharged to obtain calcium carbide liquid. The present invention adopts the method of flash smelting to produce calcium carbide, which can make full use of the active surface of powdery raw materials, strengthen the reaction process of calcium carbide smelting, reduce the reaction temperature and shorten the reaction time; utilize the high energy density electric energy of the electrodes to accelerate the calcium carbide production reaction process, and Promote the full completion of the calcium carbide reaction.

Description

technical field [0001] The invention belongs to the technical field of calcium carbide production, and in particular relates to a method for smelting calcium carbide combined with oxygen and electricity. Background technique [0002] Calcium carbide is the basic raw material of organic synthetic chemical industry, and its main chemical composition is calcium carbide (CaC 2 ). The production methods of calcium carbide in industry are mainly electrothermal method and oxygen thermal method. [0003] Calcium carbide is smelted by electrothermal method, which converts electric energy into heat energy by means of an electric arc furnace, heats lime and carbon raw materials with a particle size of 5-30 mm, and produces calcium carbide at a high temperature of 2000-2200 °C. Calcium carbide synthesis reaction is a solid-phase endothermic reaction, and the chemical kinetic process takes a long time; due to the small contact area of ​​bulk raw materials, the reaction rate and heat an...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/942
Inventor 范小刚陈洪智
Owner WISDRI ENG & RES INC LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com