Unlock instant, AI-driven research and patent intelligence for your innovation.
Method for simultaneously producing sponge iron and water-gas
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of water gas and sponge iron, which is applied in the manufacture of combustible gas, the improvement of process efficiency, and the petroleum industry to achieve the effects of low temperature, short production cycle and short reduction time
Inactive Publication Date: 2010-10-13
肖劲东
View PDF8 Cites 0 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
But so far, there is no report on the combination of the direct reduction method to produce sponge iron technology and the gas production technology to form a co-production technology
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
[0052] (1) Additional sentence:
[0053] Step 1: Grind coal and clay in the first mill 1 and the second mill 2 at a ratio of 5:1 to 200-400 mesh respectively.
[0054] Step 2: Put the coal and clay powder ground to 200-400 mesh in the mixer 3, add water and stir to mix. The amount of water added is 10-15% of the total weight of coal and clay powder.
[0055] Step 3: Put the stirred coal and clay powder in the pellet machine 4 to make coal pellets with a diameter of 5-10 cm.
[0056] Step 4: The coal pellets are transported to the dryer 5 and dried until the water content is 8%.
[0057] Step 5: Transport the dried briquettes to the rotary distributing machine 28 .
[0058] Step 6: Start the rotary distributing machine to evenly spread the dried metal pellets in the furnace 30 . Stop adding the coal pellets when the height of the coal pellets in the furnace 30 is equal to the burner 8.
[0059] (2) Ignition:
[0060] Step 7: Half open the baffle plate 35, ignite from the ...
Embodiment 2
[0091] Step 1 to step 7 are the same as in Example 1.
[0092] Step 8: Put coal and siderite ore in the first mill 1 and the second mill 2 at a ratio of 2:1:0.1, respectively, and grind them to 200-400 mesh respectively.
[0093] Step 9: Put the coal ground to 200-400 mesh, iron ore powder and binder in the mixer 4, add binder and water and stir to mix. The amount of water added is 2-10% of the total weight of coal, iron ore powder and binder. The binder is water glass with a concentration of 10%, and the amount of water added is 10-20% of the total weight of coal and iron ore powder.
[0094] Step 10: Put the stirred and mixed coal and iron ore powder in a pellet machine to make metal pellets with a diameter of 5-10 cm.
[0095] Step 11: Transport the metal pellets to the dryer 5 and dry them until the water content is 8%.
[0096] Step 12: Transport the dried metal pellets to the rotary distributing machine 28 .
[0097] Step 13: Start the rotary distributing machine to ...
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
Property
Measurement
Unit
diameter
aaaaa
aaaaa
diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention provides a method for producing water gas when a direct reduction process is used to smelt iron. The method is as follows: coal is taken as reducing agent, the water gas is taken as fuel, and oxygen is taken as combustion improver; the coal and iron oxide are respectively ground into powder, the power is mixed and pressed into metallic pallets which are placed into an iron-smelting coal gas producer, and is heated to increase the temperature to be between 1001 and 1250 DEG C to directly produce sponge iron; and the water gas is produced by injecting water or water vapor from thebottom of the iron-smelting coal gas producer to utilize afterheat after the iron-smelting coal gas producer smelts the iron. The method utilizes the direct reduction process to smelt the iron, produces the water gas during the reduction ironmaking, and can ensure that the gas produced during the iron smelting is entirely reclaimed and reused to realize the zero emission of the gas in the producer and truly realize environmental-protection iron smelting.
Description
technical field [0001] The invention relates to the fields of sponge iron and water gas, in particular to a method for producing water gas while using a direct reduction method to smelt iron. Background technique [0002] At present, the direct reduction iron smelting technology is all aimed at a single iron smelting, such as: "A new process and furnace type for smelting sponge iron" (CN1012580B) disclosed in Chinese Patent Document 1, and a kind of technology disclosed in Chinese Patent Document 2. "Direct reduction method and rotary hearth furnace" (CN 1219891C), a "coal-oxygen smelting reduction ironmaking method and device" disclosed in Chinese patent document 3 (CN1073630C), a "reducing gas production method" disclosed in Chinese patent document 4 A method for co-producing ammonia with sponge iron" (CN1047798C), "a sponge iron coal-based direct reduction process" (CN1142541A) disclosed in Chinese Patent Document 5, etc. As we all know, gas production technology is a ma...
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