SU988796A1

SU988796A1 - Process for producing potassium-magnesium fertilizer

Info

Publication number: SU988796A1
Application number: SU813291164A
Authority: SU
Inventors: Зиновий Васильевич Назаревич; Анатолий Борисович Кондратенко; Николай Васильевич Хабер; Лариса Гиляровна Пришляк; Богданна Ивановна Лущенко; Юлия Николаевна Лунькова; Иван Кириллович Миньков; Роман Михайлович Чих
Original assignee: Калушское производственное объединение "Хлорвинил"
Priority date: 1981-05-22
Filing date: 1981-05-22
Publication date: 1983-01-15

Description

(54) СПОСОБ ПОЛУЧЕНИЯ КАЛИЙНО-МАГНИЕЮГО УДОБРЕНИЯ(54) METHOD FOR GETTING POTENTIAL-MAGNETIC FERTILIZER

1 .one .

Изобретение относитс к технологии переработки полиминеральных руд, в частности переработки лангбейшгго-полигалитового концентрата.This invention relates to the technology of processing polymineral ores, in particular the processing of langbeisch-polyhalite concentrate.

Известен способ получени калийно-магниевого удобрени путем растворени полиминёральной руды в раствор ющем растворе с образованием насыщенного раствора и нерастворимого остатка. Нерастворимый остаток измельчают и подвергают флотащш в присутствии жирных кислот р да . В результате флотавдн получают лангбейнито-полимегалитовьш концентрат с содержанием, мас.%: К 13,8; Мд2- 8,8; ,7; Na 2,7; СГ 3,6; SOJ 56,7; нерастворимый в воде остаток 2,7; вода остальное. Полученный флотоконцентрат раствор ют водой при 80-90 С, с последующим охлаждением полученного раствора до 20°С, отстаиванием, фильтрацией и сушкой полученного продукта Ц).A known method of producing potassium-magnesium fertilizer by dissolving a polymineral ore in a dissolving solution to form a saturated solution and an insoluble residue. The insoluble residue is crushed and subjected to flotation in the presence of a number of fatty acids. As a result, flotavdn receive langbeinite-polymegalithic concentrate with content, wt.%: K 13,8; MD2- 8.8; , 7; Na 2.7; SG 3,6; SOJ 56.7; water insoluble residue 2.7; water the rest. The resulting flotation concentrate is dissolved with water at 80-90 ° C, followed by cooling the resulting solution to 20 ° C, settling, filtering and drying the resulting product C).

Недостатком известного способа вл етс низкое содержание К О в готовом продукте (19,5%) и больщие энергозатраты при растворенин лангбейнита и охлаждении гор чего раствора и последующем выпаривании воды.The disadvantage of this method is the low content of KO in the final product (19.5%) and high energy consumption when langbeynite is dissolved and the hot solution is cooled and the water is subsequently evaporated.

Цель изобретени - повышение содержани окиси кали в готовом продукте и снижение энергозатрат.The purpose of the invention is to increase the content of potassium oxide in the finished product and reduce energy consumption.

Поставленна цель достигаетс тем, что согласно способу получени калийно-машневого удобрени , включающему растворение полиминеральной руды, измельчение и флотацию полученного нерастворимого остатка с The goal is achieved by the fact that according to the method of obtaining a potash fertilizer, including the dissolution of polymineral ore, grinding and flotation of the obtained insoluble residue with

to последующей переработкой полученного лангбейнито-полнгалитового концентрата на готовый продукт, лангбейнито-полигалитовый концентрат смецпгаают с 20-25% -ным раствором хлористого кали при массовом соотношении To the subsequent processing of the obtained langbein-half-halite concentrate to the finished product, the langbein-polyhalite concentrate is mixed with a 20-25% solution of potassium chloride in a mass ratio

ts 1: (0,8-2,2).ts 1: (0.8-2.2).

Как видно из таблицы, выбранные интервалы концентрации обеспечивают наибольшее . содержание KjO в готовом продукте.As can be seen from the table, the selected concentration intervals provide the greatest. KjO content in the finished product.

Выбранные соотнош ш концентрата с раст20 вором хлористого кали обусловлены тем, что при соотношении ниже 1:6,8 получаетс продукт с низким содержанием окисн кали (24-27%). С соотношением более 1:2 снижа39887964The selected ratios of concentrate with a solution of potassium chloride are due to the fact that when the ratio is below 1: 6.8, a product with a low content of potassium oxide is obtained (24-27%). With a ratio of more than 1: 2 lower 39887964

Claims

The efficiency of using chlorine. The table shows the dependence of the quality of the solution and the content of magnesium oxide of the product on the concentration of the chlorine solution in the product up to 2-1.5% of the potassium in the proposed method. Example 1. 100 kg of polymineral ore are dissolved in a dissolving solution,. the result is a saturated solution and 50 kg of insoluble residue content, may. %: K 5.87; .Md2 + s, 89; , 0; Na 19.21; SG 29.78; 504 24.74; insoluble residue in water 4.30; water the rest. 50 kg of the insoluble residue is crushed: in a rod mill according to the class of 0.5 mm and subjected to flotation in the presence of a number of fatty acids. As a result of flotation, 40 kg of tailings and 10 kg are obtained. langbeinite-polyhalite concentrate. 100 kg of concentrate, crushed to a particle size of 0.5 mm with a content,% oil: K 13.3, 43; , 22; Na 0.89; C1 1.40; 304 58.89; 9.20; insoluble residue 4.61; mix from 150 kg of potassium chloride solution (23.2% KCI). After stirring for an hour at 30 ° C, 107 kg of wet potassium-magnesium fertilizer are obtained with a content (calculated on the dry matter) weight%: KjO 30.0; MgO 10.3; SG2.7 The solution after separation of the product is used in the process. Example 2. 100 kg of concentrate, crushed to a particle size of 0.5 mm, with content, in May.%: K- 13.39; , 43; , 2, 89; SG1.40; , 89; 9.20; insoluble residue 4,61; mixed with 167 kg of potassium chloride solution (25.8% KC1) After stirring for one hour at 30 ° C, 106 kg of wet potassium-magnesium fertilizer are obtained with the content (based on dry matter), wt%: KjO 30.6; MgO 9.7; SG 2.9. The solution after separation of the product is used in the process. Example 3. 100 kg of concentrate, crushed to a particle size of 0.5 mm with content, in May.%: K- 13.39; , 43; Ca 0.22; Na 0.59; C1 1.40; 504 58.89; HjO 9.2; insoluble residue 4,61, mixed with 167 kg of a solution of potassium chloride (25.8% KCI). After stirring for 30 minutes at 30 ° C, 105 kg of wet potassium-magnesium fertilizer are obtained with the content (calculated on the dry matter), wt%: K20 33; MgO 8.8; SG4,6. The solution after separation of the product is used in the process. Example 4.. 100 kg of concentrate, ground to a crust of 0.5 mm content, wt.%: K 13.39; , 43; , 89; , 22; 0.89; SG 1.40; HZ O 9.2; insoluble residue 4,61, mixed with 200 kg of a solution of potassium chloride (23.4% KCI). After stirring for 30 minutes at 30 ° C, 107 kg of wet potassium-magnesium fertilizer are obtained with a content (calculated on the dry matter), wt%: CgO 33.7; MgO 9.4; SG 2.9. The solution after separation of the product is used in the process. Example 5. 100 kg of concentrate, crushed to a particle size of 0.5 mm, with content, wt.%; K 13.59; , 42; , 04; Na 1.29; SG 1.40; , 60; HI O 11.8; insoluble residue 2.92, mixed with 200 kg of a solution of potassium chloride (22.9% KCI). After stirring at 60 ° C for one hour and cooling to 30 ° C, 113 to wet potassium-magnesium fertilizer content is obtained (in terms of dry substance, May%: KjO 33.5; MgO 8.0; CPS, 4. Solution after separation of the product is used in the tehnolotic process. Example 6. 100 kg of concentrate, from 0.5 mm size, ground to particle size, with the content, in May.%: K 11.97; Md 8.35; Ca, 2.66; Na 2, 09; SG 3.54; SO 53.64; HjO 13.3; insoluble residue 4.46, mixed with 167 kg of a solution of potassium chloride (20.5% KCl). After stirring at 60 ° C for 30 min, 94 kg of wet potassium magnesium fertilizers with a content (in terms of dry substance), wt.%: K20 31.3; MgO 8.1; Ca 3.7. The solution after separation of the product is used in the process. Example 7. 100 kg of concentrate, crushed to size 0 , 5 mm, with content, wt.%: 12.81; MD2 + 9.47; 3 Na 0.94; SG 1.57;, 50; 9.8; insoluble residue 3.53, mixed with 167 kg of potassium chloride solution (21.0% KC1). After stirring at 60 ° C for two hours and cooling to 30 ° C, get 112 kg of wet potassium-magnesium fertilizer content (in terms of dry substance) wt.%: KjO 33 , 0j MgO 8.2; SG 3.8. The solution after separation of the product is used in the process. Example 8. 100 kg of concentrate, crushed to a particle size of 0.5 mm, with content, wt.%: K 12.78; MD 7.93; Ca 2.59; Na 2.65; SG 4.2; SO | 59.05; HjG 15.6; the insoluble residue of 1.18, mixed with 120 kg of a solution of potassium chloride (23.7% KCI). After stirring at 30 ° C for an hour, 88 kg of wet potassium-magnesium fertilizer are obtained with a content (in terms of dry substance), wt%: KAO 30.9; MgO 9.4; SG2,6. The solution after separation of the product is used in the process. Example 9. 100 kg of concentrate, crushed to a particle size of 0.5 mm, with content, wt.%: K 13.02; , 34; Ca2s, 44; , 80; SG 1.26; ,, 1D; HjO 11.13; insoluble residue 4.88, mixed with 250 kg of potassium chloride solution (23.1% KCI). After stirring at 60 ° C for two hours, 76 kg of wet potassium-magic fertilizer are obtained with a content (calculated on the dry matter), wt%: KiO 35.6; MgO 1.5; SG 2.9. The solution after separation of the product is used in the process. Example 10. 100 kg of concentrate, crushed to a particle size of 0.5 mm, with content, wt.%: K 13,33; , 48; , 32; Na 2.55; SG 2.74; 57.05; NaO 7.5; insoluble residue 6.03; mixed with 100 kg of potassium chlorophyll solution (25% KCI). After stirring at 60 ° C for two hours and cooling to 30 ° C, 117 kg of wet potassium-magnesium fertilizer content (in terms of dry substance), wt.% : KjO 27.9; MgO 10.8; SG 3.8. Solution after separation. product used in the process. Example 11. 100 kg of concentrate, not crushed, with the content, May -.%: K 13.96; MD 9.42; , 27; , 62; Cl 1.71; SOf 58.78; 8.6; insoluble residue 4,61, mixed with 180 kg of a solution of potassium chloride (25% KCI). After stirring for an hour, 100 kg of wet potassium-magnesium fertilizer is obtained with a content (calculated on the dry matter), wt%: KjO 28.6; MgO 11.5; SG2.1. The solution after separation of the product is used in the process. Example 12. 100 kg of concentrate, not crushed, with content, wt.%: K 14,47; ,12; , 05; , 81; SG 2.05; , 45; H, O 10.0; an insoluble residue of 2.59, mixed with 200 kg of a solution of potassium chloride (23.5% KCI). After stirring at 30 ° C for an hour, 100 kg of wet potassium-magnesium fertilizer are obtained with a content (calculated on the dry matter), wt%; KjO 29.9; MgO 11.1; SG 2.4. The solution after separation of the product is used in the process. The proposed method makes it possible to obtain an alium-magnesium fertilizer with povipennym potassium oxide 30-35%, reduce the amount of useful components and reduce energy consumption when dissolving langbeyne. The invention of the method of producing potassium-magnesium convenience, including the dissolution of polymneal ore, grinding to flotaad by 7 9887968

ray insoluble residue with potassium chloride after-weight at a mass ratio

the following processing of the obtained laigby-1: (0.8-2.2).

nitro-polygalithic concentrate on the finishedSources of 1gformation,

A product characterized in that taken into account in the examination

that, in order to control the oxides content, 1- Lunkova Yu. N., Haber N. V. Produced in the finished product and reduced investment in concentrated potash fertilizers

gozatrat, langbeynite-polyhalite coicent from polymineral ores, Kiev, Technics,

The mix is mixed with a 20-25% solution of1980, p. 55-67.