SU945075A1 - Process for producing granulated phosphogypsum - Google Patents
Process for producing granulated phosphogypsum Download PDFInfo
- Publication number
- SU945075A1 SU945075A1 SU813230130A SU3230130A SU945075A1 SU 945075 A1 SU945075 A1 SU 945075A1 SU 813230130 A SU813230130 A SU 813230130A SU 3230130 A SU3230130 A SU 3230130A SU 945075 A1 SU945075 A1 SU 945075A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphogypsum
- product
- producing granulated
- zinc
- production
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/468—Purification of calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Description
(5) СПОСОБ ПОЛУЧЕНИЯ ГРАНУЛИРОВАННОГО (5) A METHOD FOR OBTAINING GRANULATED
Изобретение относитс к производст ву минеральных удобрений, в частности получению гранулированного серусодержащего удобрени на основе фосфогипса , - побочного продукта производства экстракционной фосфорной кислоты .The invention relates to the production of mineral fertilizers, in particular the production of granulated sulfur-containing fertilizer based on phosphogypsum, a by-product of the production of phosphoric acid.
Известен способ гранулировани фосфогипса в присутствии увлажн ющих добавок, в качестве которых используют , например 0,3-2,5%-ную азотную кислоту, в пересчете на 100%-ную кислоту от массы фосфогипса СПThe known method of granulating phosphogypsum in the presence of moisturizing additives, which use, for example, 0.3-2.5% nitric acid, based on 100% acid, based on the mass of phosphogypsum SP
Недостатком данного способа вл етс то, что он пригоден лишь дл получени гранулированного фосфогипса фракции +5-20 мм, предназначенного дл использовани в цементной промышленности и дл переработки на серную кислоту.The disadvantage of this method is that it is only suitable for producing granulated phosphogypsum fraction + 5-20 mm, intended for use in the cement industry and for processing into sulfuric acid.
Наиболее близким.к предлагаемому по технической сущности и достигаемоФОСФОГИПСАThe closest.to proposed by the technical nature and achievable PHOSPHOGIPS
му результату вл етс способ гранулировани фосфогипса путем дегидратации исходного фосфогипса до растворимого ангидрида, смешени влажного фосфогипса с растворенным ангидридом,The result is a method of granulating phosphogypsum by dehydrating the original phosphogypsum to a soluble anhydride, mixing the wet phosphogypsum with dissolved anhydride,
окатывани смеси в гранулы и рассеивани продукта.Дл этого поступающий на гранулирование фосфогипс раздел етс на два потока. Один поток под ,Q вергаетс термообработке при 200250 0 до получени растворимого ангидрида и направл етс на смешение со вторым потоком фосфогипса влажностью в соотношении 1:1. Полу ,5 ченную смесь, имеющую температуру 60-70°С, подвергают окатыванию в барабанном гранул торе 12, piling the mixture into granules and dispersing the product. For this, the phosphogypsum entering the granulation is divided into two streams. One stream under, Q is cast to heat treatment at 200250 0 to obtain soluble anhydride and is directed to mixing with the second stream of phosphogypsum in a 1: 1 ratio. Semi-finished mixture, having a temperature of 60-70 ° C, is subjected to pelletization in a drum granulator 12,
Недостатком известного способа вл етс низкий выход гранулирован20 ного продукта фракции - 5+1 мм, вл ющийс товарной фракцией дл серусодержащих удобрений, который не превышает k5%The disadvantage of this method is the low yield of the granulated 20 fraction product — 5 + 1 mm, which is a commercial fraction for sulfur-containing fertilizers that does not exceed k5%.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813230130A SU945075A1 (en) | 1981-01-05 | 1981-01-05 | Process for producing granulated phosphogypsum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813230130A SU945075A1 (en) | 1981-01-05 | 1981-01-05 | Process for producing granulated phosphogypsum |
Publications (1)
Publication Number | Publication Date |
---|---|
SU945075A1 true SU945075A1 (en) | 1982-07-23 |
Family
ID=20936512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813230130A SU945075A1 (en) | 1981-01-05 | 1981-01-05 | Process for producing granulated phosphogypsum |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU945075A1 (en) |
-
1981
- 1981-01-05 SU SU813230130A patent/SU945075A1/en active
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