CN104261364B - A kind of short route enrichment balling-up method of low grade rock phosphate - Google Patents
A kind of short route enrichment balling-up method of low grade rock phosphate Download PDFInfo
- Publication number
- CN104261364B CN104261364B CN201410493106.XA CN201410493106A CN104261364B CN 104261364 B CN104261364 B CN 104261364B CN 201410493106 A CN201410493106 A CN 201410493106A CN 104261364 B CN104261364 B CN 104261364B
- Authority
- CN
- China
- Prior art keywords
- phosphorus
- phosphate
- rock
- ore
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of short route enrichment balling-up method of low grade rock phosphate, low-grade phosphate ore is after broken, screening, oven dry and homogenizing pre-treatment, making weight percent moisture is 5%��8%, the ground phosphate rock of granularity��10mm, adds the binding agent that the intermediate product acid sludge of two water thing method Wet-process Phosphoric Acid Production is made, it is 3��4:6��7 with the proportioning of ground phosphate rock weight ratio, evenly stir into compound, after being pressed into ball, send into rotary drum drying machine, utilize phosphorus furnace exhaust gas, dry at 400��500 DEG C of temperature. The phosphorus ore pelletizing that the present invention produces, P2O5Content improve about 8%, yield rate significantly improves, and returning charge rate, lower than 10%, makes full use of phosphorus furnace exhaust gas, saves a large amount of energy, technical process shorten, facility investment reduce, especially be applicable to middle-size and small-size phosphorus stove produce, the P that will also cannot use at present2O5Content is only 15%��19% low-grade phosphate ore and is applied to phosphorus production, it is achieved that the high-efficiency comprehensive utilization of phosphate rock resource.
Description
Technical field
The present invention relates to a kind of balling-up method of low grade rock phosphate, belong to technical field of phosphorous chemical industry.
Technical background
China's phosphate rock resource reserves enrich, but rich ore is less, and middle and low grade bauxite is in the majority. Along with the high speed development of phosphorus chemical industry, phosphate rock resource consumes in a large number, and phosphorus ore has been classified as one of coming 10 years 20 mineral that can not meet national economic development demand by land resources department. The comprehensive utilization of middle-low grade, particularly low-grade phosphate ore becomes the key that sulphur dioxide of phosphor chemical industry is extricated oneself from a plight. In China's phosphate rock resource, more than 70% is the collophanite of middle-low grade, because its granularity is tiny, structure is tight, more containing detrimental impurity, ore dressing is more difficult, and cost is higher, it is not suitable for high-concentration phosphate compound fertilizers to produce, but after the art breading such as enrichment of ore-forming block, can be used for phosphorus production, and relatively economical and reasonable. The conventional sintering of existing sulphur dioxide of phosphor chemical industry and knurl are tied two kinds of methods and are carried out the low-grade ground phosphate rock of centering and carry out enrichment and cause ore deposit block, as phosphorus production raw material, but sintering and rotary kiln baking temperature height (about 1250��1300 DEG C), fuel consumption is bigger; P in phosphorus ore2O5Content improve very limited, generally only about 1%; Qualified yield rate is lower, and returning charge rate is generally all more than 30��50%. CN103663396 discloses and a kind of utilizes mid low grade phosphate rock or the method for ground phosphate rock balling-up, it is with mid low grade phosphate rock powder or ground phosphate rock, water or phosphoric acid, coke powder, one or more in phosphoric acid salt refractory mortar, white clay, water glass, soda ash, calcium carbonate, serpentine, after raw material is mixed, balling-up is suppressed with pressure ball machine, drying, after roasting, to vertical calcining kiln, still with the yellow phosphoric tail gas after purification, it is heated to 850��950 DEG C, the phosphorus ore ball made after carrying out roasting, for the production of yellow phosphorus or fused(calcium magnesium)phosphate. Though the method does not use binding agent, but operation relative complex, add composition more, it is difficult to the chemical composition in finished product and waste after pyroreaction control and the defects such as subsequent disposal must be added.
Summary of the invention
It is an object of the invention to provide a kind of short route enrichment balling-up method of low grade rock phosphate, utilize the binding agent that the intermediate product in two water thing method Wet-process Phosphoric Acid Production is made, with through the pretreated low grade rock phosphate Homogeneous phase mixing of operation, stirring, pelletizings such as fragmentation, screenings, dry through simple again, produce the phosphorus ore pelletizing for phosphorus production. The method effectively overcomes the tediously long defect of flow process that prior art exists, it is proposed that the new technical scheme of a kind of save energy, utilize resources synthetically.
The present invention is achieved through the following technical solutions:
A kind of short route enrichment balling-up method of low grade rock phosphate, low-grade phosphate ore is after the pre-treatment such as fragmentation, screening, making weight percent moisture is 5%��8%, the ground phosphate rock of granularity��10mm, send into stirrer, the outstanding difference of itself and prior art is: the solid substance weight percentage that the intermediate product acid sludge adding two water thing method Wet-process Phosphoric Acid Production is made is 15%��60%, P2O5Weight percentage be the binding agent of 30%��46%, the proportioning of binding agent and ground phosphate rock weight ratio is 3��4:6��7, evenly stir 4��6 minutes, obtain the compound that weight percent moisture is 9%��12%, send into the ball that pressure ball machine is pressed into diameter 20��50mm, send into rotary drum drying machine, utilize phosphorus furnace exhaust gas, drying at 400��500 DEG C of temperature, the time is 40��50 minutes, namely makes the phosphorus ore pelletizing for phosphorus production.
Drying waste gas qualified discharge after dedusting, washing, fine particle and dust return stirrer and reuse.
Technological method of the present invention makes full use of the phosphorus ore pelletizing that the middle acid sludge of two water thing method wet method phosphoric acid manufacture process is produced after processing as binding agent, P2O5Content improve about 8% than raw ore; The yield rate of phosphorus ore pelletizing significantly improves, and returning charge rate is lower than 10%; The hot air temperature of rotary drum drying machine controls to rise to the melt temperature of about 1300 DEG C between 400��500 DEG C, also without the need to the consumption of newly-increased coke powder equal energy source, makes full use of phosphorus furnace exhaust gas and can meet requirement, save a large amount of energy; Technical process is shortened, and facility investment reduces, and is especially applicable to low middling phosphorus stove and produces; The P that will also cannot use at present2O5Content is only the production that 15%��19% low-grade phosphate ore is applied to yellow phosphorus product, it is achieved that the high-efficiency comprehensive utilization of phosphate rock resource.
Accompanying drawing explanation
Accompanying drawing 1 is the production schematic diagram of the present invention.
Embodiment
Following embodiment is intended to describe in further detail and explain the present invention, instead of limits the present invention by any way. Those of ordinary skill in the art's any simple modifications made for the present invention and replacement, all should fall within protection scope of the present invention.
Embodiment 1
A short route enrichment balling-up method for low grade rock phosphate, P2O5Content be 16% low-grade phosphate ore through broken, screening, dry and after homogenizing pre-treatment, making weight percent moisture is 5%, the ground phosphate rock of granularity��10mm, sends into stirrer, the solid substance weight percentage that the intermediate product acid sludge adding two water thing method Wet-process Phosphoric Acid Production is made is 20%, P2O5Weight percentage be the binding agent of 45%, the proportioning of binding agent and ground phosphate rock weight ratio is 3:7, evenly stir 5 minutes, obtain the compound that weight percent moisture is 9%, send into the ball that pressure ball machine is pressed into diameter 30mm, send into rotary drum drying machine, utilizing phosphorus furnace exhaust gas, dry at 400 DEG C of temperature, the time is 40 minutes, namely the phosphorus ore pelletizing for phosphorus production is made, P in phosphorus ore pelletizing2O5Content improve 8%.
Embodiment 2
A short route enrichment balling-up method for low grade rock phosphate, P2O5Content be 17% low-grade phosphate ore through broken, screening, dry and after homogenizing pre-treatment, making weight percent moisture is 7%, the ground phosphate rock of granularity��10mm, sends into stirrer, the solid substance weight percentage that the intermediate product acid sludge adding two water thing method Wet-process Phosphoric Acid Production is made is 30%, P2O5Weight percentage be the binding agent of 43%, the proportioning of binding agent and ground phosphate rock weight ratio is 3:7, evenly stir 5 minutes, obtain the compound that weight percent moisture is 10%, send into the ball that pressure ball machine is pressed into diameter 40mm, send into rotary drum drying machine, utilizing phosphorus furnace exhaust gas, dry at 450 DEG C of temperature, the time is 45 minutes, namely the phosphorus ore pelletizing for phosphorus production is made, P in phosphorus ore pelletizing2O5Content improve 7%.
Embodiment 3
A short route enrichment balling-up method for low grade rock phosphate, P2O5Content be 19% low-grade phosphate ore through broken, screening, dry and after homogenizing pre-treatment, making weight percent moisture is 8%, the ground phosphate rock of granularity��10mm, sends into stirrer, the solid substance weight percentage that the intermediate product acid sludge adding two water thing method Wet-process Phosphoric Acid Production is made is 50%, P2O5Weight percentage be the binding agent of 35%, the proportioning of binding agent and ground phosphate rock weight ratio is 4:6, evenly stir 5 minutes, obtain the compound that weight percent moisture is 12%, send into the ball that pressure ball machine is pressed into diameter 50mm, send into rotary drum drying machine, utilizing phosphorus furnace exhaust gas, dry at 500 DEG C of temperature, the time is 50 minutes, namely the phosphorus ore pelletizing for phosphorus production is made, P in phosphorus ore pelletizing2O5Content improve 7%.
Claims (1)
1. the short route enrichment balling-up method of a low grade rock phosphate, low-grade phosphate ore is after broken, screening, oven dry and homogenizing pre-treatment, making weight percent moisture is 5%��8%, the ground phosphate rock of granularity��10mm, send into stirrer, it is characterized in that: the solid substance weight percentage that the intermediate product acid sludge adding two water thing method Wet-process Phosphoric Acid Production is made is 15%��60%, P2O5Weight percentage be the binding agent of 35%��46%, the proportioning of binding agent and ground phosphate rock weight ratio is 3��4:6��7, evenly stir 4��6 minutes, obtain the compound that weight percent moisture is 9%��12%, send into the ball that pressure ball machine is pressed into diameter 20mm��50mm, send into rotary drum drying machine, dry at 400��500 DEG C of temperature, time is 40��50 minutes, namely makes the phosphorus ore pelletizing for phosphorus production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493106.XA CN104261364B (en) | 2014-09-24 | 2014-09-24 | A kind of short route enrichment balling-up method of low grade rock phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493106.XA CN104261364B (en) | 2014-09-24 | 2014-09-24 | A kind of short route enrichment balling-up method of low grade rock phosphate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104261364A CN104261364A (en) | 2015-01-07 |
| CN104261364B true CN104261364B (en) | 2016-06-01 |
Family
ID=52152994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410493106.XA Active CN104261364B (en) | 2014-09-24 | 2014-09-24 | A kind of short route enrichment balling-up method of low grade rock phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104261364B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556548A (en) * | 1982-12-15 | 1985-12-03 | Hoechst Aktiengesellschaft | Process for purifying wet-processed phosphoric acid |
| CN102381690A (en) * | 2010-12-03 | 2012-03-21 | 宣威市恒邦磷化工业有限公司 | Powdered rock phosphate oxygen-enriched binder |
| CN102701164A (en) * | 2012-01-04 | 2012-10-03 | 张兴华 | Processing method for preparing phosphate rock powder into pellet yellow phosphorus charge |
-
2014
- 2014-09-24 CN CN201410493106.XA patent/CN104261364B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556548A (en) * | 1982-12-15 | 1985-12-03 | Hoechst Aktiengesellschaft | Process for purifying wet-processed phosphoric acid |
| CN102381690A (en) * | 2010-12-03 | 2012-03-21 | 宣威市恒邦磷化工业有限公司 | Powdered rock phosphate oxygen-enriched binder |
| CN102701164A (en) * | 2012-01-04 | 2012-10-03 | 张兴华 | Processing method for preparing phosphate rock powder into pellet yellow phosphorus charge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104261364A (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103922622B (en) | A kind of technique utilizing aluminium ash to produce aluminosulfate cement | |
| CN104355558B (en) | A kind of take Pb-Zn tailings as cement of raw material and preparation method thereof | |
| CN103663396B (en) | Utilize the pelletizing method of mid low grade phosphate rock or ground phosphate rock | |
| CN101767978B (en) | Manganese slag-solid waste mixed sintering brick making method | |
| CN104261363B (en) | A kind of ground phosphate rock granulating and forming roasting method | |
| CN104150794B (en) | A kind of preparation method of iron tailings portland cement | |
| CN101747090B (en) | Method for preparing calcium magnesium phosphate fertilizer by utilizing phosphorite flotation tailing blast furnace method | |
| CN103833241B (en) | A kind of method utilizing converter slag to prepare cement clinker | |
| CN104477926B (en) | A kind of method that coal ash alkali soaks sintering hydro-thermal method produces eakleite and aluminium oxide | |
| CN104310817B (en) | A kind of method utilizing industrial sludge to make reacting movable agent dry process clinker | |
| CN107098577A (en) | A kind of method and system for processing red mud | |
| CN105481303B (en) | It is made based on alkaline residue non-burning brick and preparation method thereof | |
| CN102910888A (en) | Mixed material for filling mine roadway | |
| CN101747091B (en) | Method for preparing calcium magnesium phosphate fertilizer by using phosphorite floatation tailing as raw material | |
| CN107793160A (en) | A kind of production method for being homogenized light calcined magnesia | |
| CN104261365B (en) | A kind of enrichment pelletizing method of low grade rock phosphate | |
| CN103058739A (en) | Method for producing alkaline fertilizer by phosphate rock tailings or low-grade phosphate rock kiln method | |
| CN205838850U (en) | The rotary kiln production line of calcining powdered lime | |
| CN104261364B (en) | A kind of short route enrichment balling-up method of low grade rock phosphate | |
| CN104477927A (en) | Method for producing tobermorite and aluminum oxide by using coal ash alkaline leaching sintering hydrothermal method | |
| CN102874779A (en) | New method for producing monoammonium phosphate by using middle and low-grade phosphate ore without discharging of solid waste | |
| CN106086401B (en) | A kind of method being applied to inorganic polymer in iron mineral powder agglomeration technique | |
| CN104229763A (en) | Defluorination technology of phosphorite powder for producing yellow phosphorus | |
| CN104261362B (en) | A kind of ground phosphate rock pressure ball molding method of roasting | |
| CN104261368B (en) | A kind of method that ground phosphate rock pressure ball molding is dried |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |