SU1502513A1 - Method of producing binder from phosphogypsum - Google Patents

Method of producing binder from phosphogypsum Download PDF

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Publication number
SU1502513A1
SU1502513A1 SU874253607A SU4253607A SU1502513A1 SU 1502513 A1 SU1502513 A1 SU 1502513A1 SU 874253607 A SU874253607 A SU 874253607A SU 4253607 A SU4253607 A SU 4253607A SU 1502513 A1 SU1502513 A1 SU 1502513A1
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SU
USSR - Soviet Union
Prior art keywords
phosphogypsum
mpa
strength
heat treatment
under pressure
Prior art date
Application number
SU874253607A
Other languages
Russian (ru)
Inventor
Елена Анатольевна Евсеева
Анатолий Александрович Кононов
Original Assignee
Минский Завод Гипса И Гипсовых Стройдеталей
Priority date (The priority date 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 date listed.)
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Application filed by Минский Завод Гипса И Гипсовых Стройдеталей filed Critical Минский Завод Гипса И Гипсовых Стройдеталей
Priority to SU874253607A priority Critical patent/SU1502513A1/en
Application granted granted Critical
Publication of SU1502513A1 publication Critical patent/SU1502513A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/024—Ingredients added before, or during, the calcining process, e.g. calcination modifiers

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Изобретение относитс  к способу получени  в жущего из фосфогипса и может найти применение в промышленности строительных материалов. Цель изобретени  - повышение прочности. Способ получени  в жущего из фосфогипса включает перемешивание его с добавкой - продуктом взаимодействи  эквимол рных количества дипиновой кислоты и гексаметилендиамина-солью АГ в количестве 0,5-1% от массы фосфогипса, последующие брикетировани  под давлением 20-100 МПа и термообработку насыщенным паром при избыточном давлении 0,15-0,25 МПа в течение 4-10 ч. Прочность в жущего при сжатии 36,2 МПа, при изгибе 14,1 МПа. 2 табл.This invention relates to a method for producing a phosphogypsum stubble and can be used in the building materials industry. The purpose of the invention is to increase the strength. The method of obtaining a phosphogypsum carrier includes mixing it with an additive — a product of interaction between equimolar amounts of dipic acid and hexamethylenediamine-AH salt in an amount of 0.5-1% by weight of phosphogypsum, subsequent briquetting under pressure of 20-100 MPa and heat treatment with saturated steam with excess pressure of 0.15-0.25 MPa for 4-10 hours. The strength of the compressive strength is 36.2 MPa, and the bending is 14.1 MPa. 2 tab.

Description

Изобретение относитс  к способу получени  в жущего из фосфогипса и может найти применение в промышленности строительных материалов.This invention relates to a method for producing a phosphogypsum stubble and can be used in the building materials industry.

Цель изобретени  - повышение прочности.The purpose of the invention is to increase the strength.

Используема  в качестве добавки соль АГ  вл етс  сырьем дл  производства полиамида и представл ет собой продукт взаимодействи  экви- мол рных. количеств адипиновой кислоты и гексаметилендиамина.The AG salt used as an additive is a raw material for the production of polyamide and is an equimolar product of interaction. quantities of adipic acid and hexamethylenediamine.

В сырье перед прессованием ввод т соль АГ (в пересчете на сухой фосфо- гипс).и прессуют под давлением 20- 100 МПа. Полученные брикеты подвергают гидротермальной обработке в течение 4-10 ч и избыточном давлении в автоклаве 0,15-0,25 МПа, затем сушат , дроб т и размалывают до удельной поверхности 0,5-0,6 . В жущее испытывают по известной меюдике,Before pressing, the AH salt (in terms of dry phospho-gypsum) is introduced into the raw material and pressed under a pressure of 20-100 MPa. The resulting briquettes are subjected to hydrothermal treatment for 4-10 hours and an autoclave pressure of 0.15-0.25 MPa, then dried, crushed and ground to a specific surface of 0.5-0.6. In the gut feeling on known meydike,

В табл, 1 даны свойства в жущего, полученного по предлагаемому способу, а в табл. 2 - в жущего, полученного по известному способу.In the table, 1 are given the properties in the shearer, obtained by the proposed method, and in table. 2 - in the gimp, obtained by a known method.

Как видно из данных табл, 1 и 2 поставленна  цель достигаетс  без предварительного размола исходного продукта и в том случае, если перед прессованием фосфогипса вводитс  соль АГ, котора   вл етс  одновременно нейтрализатором кислых примесей и модификатором кристаллизации полугидрата.As can be seen from the data in Table 1 and 2, the goal is achieved without first grinding the original product, and if prior to pressing the phosphogypsum salt, the AG salt is added, which is both a neutralizer of acidic impurities and a modifier of crystallization of the hemihydrate.

Claims (1)

Формула изобретени Invention Formula Способ получени  и жушего из Фосфогипса путем перемешпп ии  его сThe method of obtaining and live from Phosphogypsum by mixing them with СПSP о го елabout ate сЗsz поверхностно-активной добавкой, брикетировани  под давлением 20-100 МПа и термообработки насыщенным паром под давлением до полной дегидратации гипса с последующей сушкой и помолоМ, отличающийс  тем, ITO, с целью повьолеии  прочности, в качестве поверхностно-активной добавки используют продукт взаимодействи  эквимол рных количеств эдипиновой кислоты и гексаметилендиамина - соль АГ в количестве 0,5-1% от массы фос- фогипса, а термообработку ведут при избыточном давлении пара 0,15-0,25 Mlla,surface-active additive, briquetting under pressure of 20-100 MPa and heat treatment with saturated steam under pressure until the gypsum is completely dehydrated, followed by drying and grinding, characterized by ITO, in order to make it stronger, as the surface-active additive, the product of interaction of equimolar quantities is used oedipic acid and hexamethylenediamine - AH salt in the amount of 0.5-1% by weight of phosphogypsum, and heat treatment is carried out at an excess vapor pressure of 0.15-0.25 Mlla, Таблица 1Table 1 1,0 1.0 1,0 1,01.0 1.0 100 0,15 10100 0.15 10 8 26,8 9,38 26.8 9.3 100 0,15 10 8 26,1 8,9 100 0,15 10 8 27,3 9,8100 0.15 10 8 26.1 8.9 100 0.15 10 8 27.3 9.8 Таблица 2table 2 8 26,8 9,38 26.8 9.3
SU874253607A 1987-04-10 1987-04-10 Method of producing binder from phosphogypsum SU1502513A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU874253607A SU1502513A1 (en) 1987-04-10 1987-04-10 Method of producing binder from phosphogypsum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU874253607A SU1502513A1 (en) 1987-04-10 1987-04-10 Method of producing binder from phosphogypsum

Publications (1)

Publication Number Publication Date
SU1502513A1 true SU1502513A1 (en) 1989-08-23

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SU874253607A SU1502513A1 (en) 1987-04-10 1987-04-10 Method of producing binder from phosphogypsum

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SU (1) SU1502513A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088045A1 (en) * 2001-05-01 2002-11-07 National Gypsum Properties, Llc Method of producing calcium sulfate alphahemihydrate
LT5939B (en) 2011-07-15 2013-05-27 Vilniaus Gedimino technikos universitetas Structural thermal insulation composite from local technogenic waste

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР N 494364, кл. С 04 В 11/02, 1975. Авторское свидетельство СССР № 643454, кл. С 04 В 11/024, 1976. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088045A1 (en) * 2001-05-01 2002-11-07 National Gypsum Properties, Llc Method of producing calcium sulfate alphahemihydrate
US6652825B2 (en) 2001-05-01 2003-11-25 National Gypsum Properties Llc Method of producing calcium sulfate alpha-hemihydrate
LT5939B (en) 2011-07-15 2013-05-27 Vilniaus Gedimino technikos universitetas Structural thermal insulation composite from local technogenic waste

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