CN101698492B - Alumina production process flow - Google Patents
Alumina production process flow Download PDFInfo
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- CN101698492B CN101698492B CN2009101806832A CN200910180683A CN101698492B CN 101698492 B CN101698492 B CN 101698492B CN 2009101806832 A CN2009101806832 A CN 2009101806832A CN 200910180683 A CN200910180683 A CN 200910180683A CN 101698492 B CN101698492 B CN 101698492B
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- horizontal table
- aluminium hydroxide
- table filter
- process flow
- grader
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Abstract
The invention discloses an alumina production process flow, including the following steps: 1. a decomposition tank is connected with a grader by a pipe, and aluminium hydroxide size decomposed by the decomposition tank is conveyed to the grader; 2. the grader is connected with a flat plate filtering machine by a pipe, and the aluminium hydroxide size conveyed by the grader is directly conveyed to the flat plate filtering machine by the pipe by natural fall; 3. the flat plate filtering machine is directly mounted on a roasting furnace, and the aluminium hydroxide size conveyed to the flat plate filtering machine is fed into a feeding tank after filtering; 4. the filtered aluminium hydroxide is weighed by an electronic belt weigher and then fed into a venturi dryer by a spiral feeder; 5. the dried aluminium hydroxide is further dried, cooled and processed into alumina finished product. The invention spares aluminium hydroxide bin and conveying equipment thereof and material conveying pipeline, so that the whole layout of plant area is briefer, process flow is reduced to the utmost extent, production cost is reduced, and production efficiency is improved.
Description
Technical field
The present invention relates to a kind of process for making alumina, particularly relate to the method for a kind of alumina producer cancellation white lake storehouse and handling equipment.
Background technology
In alumina producing Bayer process, generally be the slurry vessel (like Fig. 1) that is sent to square position, roasting workshop operation from the slip that the decomposing grading machine comes out.After slurry vessel is paused to stop, according to square position blanking amount, with the underflow pump to the square position feeding.Be continuous feeding under the situation of ordinary production,, can temporarily leave in the slurry vessel decomposing the slip that comes if provisional fault appears in the square position.The white lake that produce the square position is through discharge auger, and directly discharging is delivered to the white lake storehouse through the white lake belt on the white lake belt.Be delivered in the stoving oven feed box from the white lake storehouse or from the next white lake of finished product filtration, belt metering feeding machine interlocking under material level and the storehouse is controlled the stoving oven inlet amount in the feed box.Moisture 6～8% white lake is through rubber conveyer, and screw feeder is sent in the venturi drier, and dried white lake is through further oven dry, and the finished product aluminum oxide is processed in cooling.But, in the production technique of existing production aluminum oxide, build white lake storehouse and related pipeline thereof, equipment need take a certain amount of occupation of land space, equally also need spend a large amount of fund construction and maintenance.Also have, the overhead traveling crane in white lake storehouse, the switch of pipeline, valve is safeguarded on the way, all need drop into certain man power and material, and production cost is increased, production efficiency lags behind.
Summary of the invention
The purpose of this invention is to provide a kind of improved process for making alumina, particularly provide a kind of and can reduce investment, simplify the technical process of alumina producing, the novel process for making alumina method that uses manpower and material resources sparingly and enhance productivity.
For achieving the above object, technical scheme of the present invention provides a kind of alumina production process flow, may further comprise the steps:
(1) decomposer links to each other through pipeline with grading machine, and the aluminum hydroxide slurry that decomposer decomposes is delivered to grading machine;
(2) grading machine links to each other through pipeline with horizontal table filter, and the aluminum hydroxide slurry that grading machine is carried directly passes through pipe-line transportation to horizontal table filter with the advantage of free drop;
(3) horizontal table filter is directly installed on the stoving oven, the aluminum hydroxide slurry that is delivered to horizontal table filter after horizontal table filter filters feeding to feed box;
(4) white lake that after horizontal table filter filters, obtains is sent in the venturi drier by screw feeder after the belted electronic balance weighing;
(5) dried white lake is through further oven dry, and the finished product aluminum oxide is processed in cooling.
Wherein, belt metering feeding machine interlocking under material level in the said step (3) in the feed box and the storehouse, control stoving oven inlet amount.
Technique scheme has following advantage: through cancellation white lake storehouse and handling equipment thereof; Cancelled the mass transport pipeline, made plant area's entire arrangement more succinct, simultaneously; Farthest shortened technical process; Make the alumina producing flow process more convenient, greatly reduce production cost, improved production efficiency.
Description of drawings
Fig. 1 is a square position filterer program flow diagram in the alumina producing Bayer process;
Fig. 2 is that the roasting furnace roof adds the horizontal table filter process flow sheet among the present invention.
Wherein, 1: horizontal table filter; 2: the stoving oven feed box; 3: grading machine; 4: decomposer; Arrow----material trend.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
The present invention is directly installed on (as shown in Figure 2) on the stoving oven with horizontal table filter; The aluminum hydroxide slurry that decomposer decomposes is delivered to grading machine; The aluminum hydroxide slurry that comes out from grading machine directly passes through pipe-line transportation to horizontal table filter with the advantage of free drop; Directly feeding is in feed box for the white lake that after horizontal table filter filters, obtains, and belt metering feeding machine interlocking under material level and the storehouse is controlled the stoving oven inlet amount in the feed box.After horizontal table filter filtered, moisture about 6～8% white lake was sent into the venturi drier inner drying by screw feeder after the belted electronic balance weighing, and dried white lake is through further oven dry, and the finished product aluminum oxide is processed in cooling.
The present invention is through cancellation white lake storehouse and transportation equipment thereof, and cancellation mass transport pipeline makes plant area's entire arrangement more succinct; Through guaranteeing the absolute altitude of grading machine, make aluminum hydroxide slurry from classifier overflow to the square position.The square position is installed on the stoving oven, and material flow shortens greatly.
The present invention has farthest shortened technical process, makes the alumina producing flow process more convenient.In the present embodiment, compare, at first, cancelled the white lake storehouse, cancelled 5 rubber conveyers, 1 bridge grabbing crane and supporting electrical equipment thereof, can economize on the use of funds about 1,140,000 yuan with immediate prior art; Cancelled connection process line, valve and pipe support, can economize on the use of funds about 10,000 yuan, added up to and economize on the use of funds about 1,150,000 yuan.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and replacement, these improvement and replacement also should be regarded as protection scope of the present invention.
Claims (2)
1. an alumina production process flow is characterized in that, it carries out according to following process step:
(1) decomposer links to each other through pipeline with grading machine, and the aluminum hydroxide slurry that decomposer decomposes is delivered to grading machine;
(2) grading machine links to each other through pipeline with horizontal table filter, and the aluminum hydroxide slurry that grading machine is carried directly passes through pipe-line transportation to horizontal table filter with the advantage of free drop;
(3) horizontal table filter is directly installed on the stoving oven, the aluminum hydroxide slurry that is delivered to horizontal table filter after horizontal table filter filters feeding to feed box;
(4) white lake that after horizontal table filter filters, obtains is sent in the venturi drier by screw feeder after the belted electronic balance weighing;
(5) dried white lake is through further oven dry, and the finished product aluminum oxide is processed in cooling.
2. alumina production process flow as claimed in claim 1 is characterized in that, belt metering feeding machine interlocking under material level in the said step (3) in the feed box and the storehouse, control stoving oven inlet amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101806832A CN101698492B (en) | 2009-10-26 | 2009-10-26 | Alumina production process flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101806832A CN101698492B (en) | 2009-10-26 | 2009-10-26 | Alumina production process flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101698492A CN101698492A (en) | 2010-04-28 |
| CN101698492B true CN101698492B (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101806832A Active CN101698492B (en) | 2009-10-26 | 2009-10-26 | Alumina production process flow |
Country Status (1)
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| CN (1) | CN101698492B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302874A (en) * | 2011-06-21 | 2012-01-04 | 中国铝业股份有限公司 | Method for processing mother liquor of aluminum hydroxide flat disc filter |
| CN103539174B (en) * | 2013-10-24 | 2015-04-29 | 杭州锦江集团有限公司 | Circulating mother liquor feed device and feeding method |
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2009
- 2009-10-26 CN CN2009101806832A patent/CN101698492B/en active Active
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| CN101698492A (en) | 2010-04-28 |
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Effective date of registration: 20201230 Address after: 472100 Shanxian Industrial Park, Sanmenxia City, Henan Province Patentee after: KAIMAN ALUMINUM (SANMENXIA) Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310005 111 South Building 20-22, Jinjiang Patentee before: HANGZHOU JINJIANG GROUP Co.,Ltd. |
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