CN85102759B - Alkaline decomposition of boric ore - Google Patents
Alkaline decomposition of boric ore Download PDFInfo
- Publication number
- CN85102759B CN85102759B CN85102759A CN85102759A CN85102759B CN 85102759 B CN85102759 B CN 85102759B CN 85102759 A CN85102759 A CN 85102759A CN 85102759 A CN85102759 A CN 85102759A CN 85102759 B CN85102759 B CN 85102759B
- Authority
- CN
- China
- Prior art keywords
- decomposition
- minutes
- slurry temperature
- ore deposit
- boron
- 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.)
- Expired
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
An alkaline hydrolysis method is adopted for processing boron ore at present, for example a pressure alkali decomposition method and a carbon-alkaline method for processing boron-magnesium ore. Decomposition reaction time can reach over 10 hours. The present invention adopts a method for alkaline hydrolysis under normal pressure. The compounding ratio of slurry with proper amount is controlled, and chemical heat is fully used. Under the condition of no external heat or less external heat, decomposition reaction time is shortened from a few minutes to scores of minutes, for example boron-magnesium ore with a processing grade of 10 to 25 % has the maximum decomposition reaction time of 50 minutes. The decomposition rate can reach from 40 to 90%.
Description
The invention belongs to boron rock processing.Further the say so complete processing in boron magnesium ore deposit.
Produce borax by the boron rock that grade is lower, for example produce borax, adopt pressure alkali decomposition and carbon alkaline process for many years by boron magnesium ore deposit.What early sixties adopted is pressure alkali decomposition.The carbon alkaline process was widely used in producing in recent years, and at the processing low-grade boron ore, particularly low-grade boron magnesium demonstrates certain superiority in the ore deposit.But the decomposition reaction of carbon alkaline process limited further raising production intensity for up to 20～24 hours.Compare with the carbon alkaline process, the decomposition reaction time of pressure alkali decomposition can shorten about half, but still reaches 10 hours, and course of processing energy consumption is big, equally also is unfavorable for increasing substantially production intensity.Therefore, accelerate decomposition reaction, shorten the reaction times, become the emphasis in the current boron rock working research.
The invention provides a kind of alkaline hydrolysis method of boric ore, it can shorten the reaction times extremely significantly, can make full use of the digestive fever of breeze in the course of processing, the solution heat of caustic soda and the reaction heat of decomposition reaction again,, decomposition reaction be carried out fast under normal pressure simultaneously again without pressure-resistant equipment.
The present invention is to the alkaline process boric ore, particularly alkaline process processing boron magnesium ore deposit is influenced decomposition reaction time length, promptly react each influence factor of speed and carried out analysis-by-synthesis, discovery is under the certain condition of alkali concn, liquid-solid compared with primary effect, speed of response is accelerated along with the decline of liquid-solid ratio, and promptly the more little reaction times of liquid-solid ratio is short more.Next is the influence of type of heating, when alkali concn and liquid-solid ratio one regularly, heat-up rate more the fast response time short more.Also just for accelerating decomposition reaction, the shortening reaction times has indicated direction in above analysis.
The present invention finds after the chemical constitution of having analyzed boron rock, general low-grade boron rock, all contain a certain amount of free magnesium and calcium oxide in its ripe breeze, particularly low-grade boron magnesium ore deposit, free magnesium oxide and calcium oxide content are generally all higher in its ripe breeze, and they can produce a large amount of digestive fevers when batching, if can make full use of this heat, the solution heat of caustic soda when adding batching can be warming up to slip higher rapidly even meet or exceed and react temperature required.
The present invention notices has ionogen to exist in the slip, so the present invention makes full use of this factor, uses electric current direct heating slip to achieve good results.Using the method for electric current direct heating slip, is to make to contain electrolytical slip and both become electric conductor, is again heating member, simultaneously still heated object.Electric current direct heating slip and the aforesaid chemical heat of utilizing combine from the method that heats slip, have thoroughly solved the slow problem of intensification that slip heat transfer property difference is caused.
Method provided by the invention is the digestive fever of ripe breeze when at first utilizing batching and solution heat and other reaction heat of caustic soda, makes slip from being warming up to the decomposition reaction temperature, to finish decomposition reaction.Do not reach when requiring at the above-mentioned heat of intensification certainly, again with the method additional heat of electric current or high pressure steam or stack gas direct heating slip, to finish decomposition reaction.
Main points of the present invention are, the ripe breeze in boron magnesium ore deposit and caustic soda and water had in the reactor of attemperator one by certain liquid-solid ratio be made into slip, the digestive fever of breeze and the solution heat of caustic soda make slip be warming up to comparatively high temps rapidly, when slurry temperature has reached temperature of reaction, the reaction liberated heat can be kept temperature of reaction 5～25 minutes, made rate of decomposition reach 40～90%.Not enough and because of thermosteresis when big or other reason makes slurry temperature not reach temperature of reaction when the solution heat of the digestive fever of breeze and caustic soda, utilize electric current or high pressure steam or stack gas direct heating slip again, make it to reach rapidly temperature of reaction, and kept temperature of reaction 5～45 minutes, make rate of decomposition reach 40～95%.
For example, be 10～25% the ripe breeze in boron magnesium ore deposit with grade and excessively be 0～140% caustic soda and can make alkali concn reach 25～80%.Liquid-solid ratio reaches 0.2～1.2 water and metal electrode is housed and has in the insulated reactor of attemperator one and be made into slip, and the digestive fever of ripe breeze and the solution heat of caustic soda can directly be heated to 40～140 ℃ with prepare burden slurry.When slurry temperature surpasses 120 ℃, any outer heat need be provided, reaction heat can be kept slurry temperature at more than 120 ℃ 5～25 minutes, and its rate of decomposition can reach 40～90%, even higher.When the solution heat of the digestive fever of ripe breeze and caustic soda can not make slurry temperature reach more than 120 ℃, by metal electrode,, slurry temperature is risen to more than 120 ℃ rapidly with 10～100V alternating-current direct heating slip, kept 5～45 minutes, its rate of decomposition reaches 40～95%.
The present invention is 10～25% boron magnesium ore deposit for the processing grade, best excess base is 60～100%, best liquid-solid ratio is 0.4～0.8, best alkali concn is 40～70%, use stainless steel electrode, best working voltage 10～35V, 120～150 ℃ of optimal reaction temperatures, in 5～25 minutes reaction times, rate of decomposition reaches 60～95%.
Fully implement the present invention, can reach higher rate of decomposition at short notice.For example for processing boron magnesium ore deposit, the general rate of decomposition that only needs can to reach in tens minutes pressure alkali decomposition or carbon alkaline process several hours and even tens hours even just can reach in 20 hours.The present invention carries out decomposition reaction under normal pressure, do not need pressure-resistant equipment.As of the present invention, the various chemical heat when making full use of batching can cut down the consumption of energy significantly, process one ton of ripe breeze in boron magnesium ore deposit, and power consumption only is 30～120 degree, even can be lower.Because the present invention has reduced the liquid-solid ratio of batching significantly, therefore can save enrichment process in the post-treatment operation, more makes the present invention demonstrate energy-saving advantages.
The present invention is suitable for processing grade at boron magnesium ore deposit more than 10% and colemanite stone ore, is particularly suitable for processing grade in the boron magnesium ore deposit more than 10%.
Example 1
With grade be ripe breeze 200 grams in 21% boron magnesium ore deposit and excessive 100% caustic soda and 120 ml waters are made into slip in the reactor of attemperator is arranged, slurry temperature rises to 140～145 ℃ rapidly in 2～4 minutes, kept 10 minutes after reaching top temperature, making beating is filtered, and surveying its rate of decomposition is 92%.
Contain free magnesium about 35% in this ripe breeze, contain free calcium oxide about 10%.
Example 2
To be ripe breeze 200 grams in 21% boron magnesium ore deposit with excessive 80% caustic soda and 140 ml waters be equipped with in the reactor of stainless steel electrode one is made into slip with grade, the digestive fever of ripe breeze and the solution heat of caustic soda make slip from being warming up to 120 ℃, pass through stainless steel electrode direct heating slip with the 20V alternating-current again, slurry temperature rises to 145 ℃ from 120 ℃, need 5 minutes approximately, electric current is promptly reduced to four amperes from 13 amperes.Discharging making beating then, surveying its rate of decomposition is that 90%, one ton of ripe breeze power consumption is about 110 degree.
Claims (3)
1, a kind of alkaline hydrolysis method of processing boron magnesium ore deposit, it is characterized in that with grade be 10%～25% the ripe breeze in boron magnesium ore deposit and excessive be 0～140% caustic soda and can make that alkali concn reaches 25～80%, liquid-solid ratio reaches 0.2～1.2 water and metal electrode is housed and has in the insulated reactor of attemperator one and be made into slip, the digestive fever of ripe breeze and the solution heat of caustic soda make slurry temperature rise to 40～140 ℃ rapidly, when slurry temperature surpassed 120 ℃, reaction heat made slurry temperature maintain more than 120 ℃ 5～25 minutes.When the digestive fever of ripe breeze and the solution heat of caustic soda can not make slurry temperature reach 120 ℃, by metal electrode,, slurry temperature is risen to more than 120 ℃ rapidly with 10～100V alternating-current direct heating slip, kept 5～45 minutes.
2, in accordance with the method for claim 1, it is characterized in that for the processing grade be 10%～25% boron magnesium ore deposit, best excess base is 60～100%, best liquid-solid ratio is 0.4～0.8, best alkali concn is 40～70%, and best working voltage is 10～35V, and optimal reaction temperature is 120 ℃～150 ℃.
3, in accordance with the method for claim 1, it is characterized in that said metal electrode is a stainless steel electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102759A CN85102759B (en) | 1985-04-01 | 1985-04-01 | Alkaline decomposition of boric ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102759A CN85102759B (en) | 1985-04-01 | 1985-04-01 | Alkaline decomposition of boric ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102759A CN85102759A (en) | 1987-01-17 |
| CN85102759B true CN85102759B (en) | 1988-05-25 |
Family
ID=4792736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102759A Expired CN85102759B (en) | 1985-04-01 | 1985-04-01 | Alkaline decomposition of boric ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102759B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7204968B2 (en) * | 2004-08-30 | 2007-04-17 | Reints John V | Method of producing heat energy |
| CN116715250B (en) * | 2023-05-05 | 2024-04-16 | 湖北理工学院 | Method for extracting boron from boron concentrate clinker |
-
1985
- 1985-04-01 CN CN85102759A patent/CN85102759B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102759A (en) | 1987-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103014317B (en) | Method for extracting lithium salt from lepidolite | |
| CN101367517B (en) | Method for preparing high pure graphite with steam heating | |
| CN102556988B (en) | Ultra-pure white phosphorus ordinary-pressure conversion method | |
| CN85102759B (en) | Alkaline decomposition of boric ore | |
| CN103552996A (en) | Method for reclaiming tellurium from copper anode slime by microwave acid leaching | |
| CN109264751A (en) | A method of extracting lithium carbonate and ammonium metavanadate from lepidolite and vanadium-containing shale | |
| CN103936048A (en) | Method for recovering and utilizing sewage generated during technology process of acid method for extracting aluminum oxide from fly ash | |
| CN103014316A (en) | Novel method for processing lepidolite material | |
| RU2394758C2 (en) | Method of obtaining pure graphite | |
| GB464667A (en) | Method of producing hydrogen by converting carbon monoxide with steam | |
| CN110526240A (en) | A kind of method of purification of natural micro crystal graphite | |
| CN110040736A (en) | A kind of preparation method of silica | |
| CN1952186A (en) | Processing of boron rock by alkaline hydrolysis | |
| CN108502852A (en) | A kind of method that selenium in copper anode mud is recycled in microwave sulfating roasting | |
| CN114988381A (en) | Method for preparing iron phosphate by using waste lithium iron phosphate battery | |
| CN102642858A (en) | Method for leaching aluminum oxide in fly ash by using microwave acid dissolution | |
| CN109371260A (en) | A method of reduced nickel and iron from lateritic nickel ore | |
| CN101838001A (en) | Method for preparing low-ferrum crystalline aluminium chloride from coal ash | |
| CN104789777A (en) | Method for recovering germanium and bismuth from bismuth germinate crystal processing wastes | |
| JPS62132731A (en) | Production of rare earth metal oxide | |
| AU2019262096B2 (en) | Processing rare earth sulphate solutions | |
| CN113149039B (en) | Method for preparing lithium oxide by thermal reduction of spodumene | |
| CN103936040A (en) | Ultrasonic wave acid method for extracting aluminum oxide from fly ash | |
| US3451769A (en) | Method of producing ammonium salts and iron oxide from waste pickle liquor | |
| CN117534067A (en) | Simple purification method of coal-based graphite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |