RU94015581A - Method of thermal power stations ash processing - Google Patents

Method of thermal power stations ash processing

Info

Publication number
RU94015581A
RU94015581A RU94015581/25A RU94015581A RU94015581A RU 94015581 A RU94015581 A RU 94015581A RU 94015581/25 A RU94015581/25 A RU 94015581/25A RU 94015581 A RU94015581 A RU 94015581A RU 94015581 A RU94015581 A RU 94015581A
Authority
RU
Russia
Prior art keywords
suspension
iron
water
ash
thermal power
Prior art date
Application number
RU94015581/25A
Other languages
Russian (ru)
Other versions
RU2073695C1 (en
Inventor
Л.Г. Герасимова
А.И. Николаев
Л.А. Сафонова
Н.М. Жданова
Е.П. Ветрова
Original Assignee
Институт химии и технологии редких элементов и минерального сырья Кольского научного центра РАН
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.)
Filing date
Publication date
Application filed by Институт химии и технологии редких элементов и минерального сырья Кольского научного центра РАН filed Critical Институт химии и технологии редких элементов и минерального сырья Кольского научного центра РАН
Priority to RU94015581A priority Critical patent/RU2073695C1/en
Publication of RU94015581A publication Critical patent/RU94015581A/en
Application granted granted Critical
Publication of RU2073695C1 publication Critical patent/RU2073695C1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

FIELD: iron-bearing pigment fillers made of production wastes, thermal power stations ash in particular and used in paint and varnish industry and building. SUBSTANCE: thermal power stations ash is made suspension in water and sulfuric acid or hydrochloric acid are added in suspension till concentration achieves 50 -100 g/l with ratio of solid and liquid phases H : L = 1 : (3 - 5). Mixture is heated up to temperature of 50 - 75 deg C and held for 3 - 10 hours. After the holding suspension is filtered, liquid phase is sent in circulation and sediment is washed with water and calcined to produce iron-bearing pigment filler. To decrease pigment filler covering power index, sediment after acidic treatment is separated from liquid phase, suspended in water, iron compounds (+2) is introduced in suspension in amount of 20 -100 g/l b y FeO and suspension is held under air feeding for 5 - 10 hours under temperature of 70 - 90 C. Method allows to improve labour sanitary conditions and to produce iron-bearing pigment fillers of wide spectrum of action. EFFECT: improved labour conditions and produced universal iron-bearing pigment filler. 2 cl, 1 tbl

Claims (1)

Изобретение относится к технологии получения железосодержащих пигментных наполнителей из отходов производства, в частности из золы тепловых станций, и может быть использовано в лакокрасочной и строительной промышленностях. Сущность изобретения заключается в том, что золу тепловых станций суспензируют в воде и вводят в суспензию серную или соляную кислоту до концентрации 50 - 100 г/л при отношении твердой и жидкой фаз Т : Ж = 1 : 3 - 5, нагревают смесь до 50 - 75oC и выдерживают 3 - 10 ч. После указанной выдержки суспензию фильтруют, жидкую фазу направляют в оборот, а осадок промывают водой и прокаливают с получением железосодержащего пигментного наполнителя. Для снижения показателя укрывистости пигментного наполнителя осадок после кислотной обработки отделяют от жидкой фазы, суспензируют в воде, вводят в суспензию соединения железа (+2) в количестве 20 - 100 г/л по FeO и при подаче воздуха выдерживают при температуре 70 - 90oC в течение 5 - 10 ч. Способ позволяет улучшить санитарные условия труда и получать железосодержащие пигментные наполнители широкого спектра действия.The invention relates to a technology for producing iron-containing pigment fillers from industrial wastes, in particular from the ash of thermal stations, and can be used in the paint and varnish and construction industries. The essence of the invention lies in the fact that the ash of thermal stations is suspended in water and sulfuric or hydrochloric acid is introduced into the suspension to a concentration of 50-100 g / l with a ratio of solid and liquid phases T: W = 1: 3-5, the mixture is heated to 50 - 75 o C and incubated for 3 to 10 hours. After this exposure, the suspension is filtered, the liquid phase is directed into circulation, and the precipitate is washed with water and calcined to obtain an iron-containing pigment filler. To reduce the hiding power of the pigment filler, the precipitate after acid treatment is separated from the liquid phase, suspended in water, introduced into the suspension of iron compounds (+2) in an amount of 20 - 100 g / l FeO and kept at a temperature of 70 - 90 o C within 5 to 10 hours. The method allows to improve sanitary working conditions and to obtain iron-containing pigment fillers of a wide spectrum of action.
RU94015581A 1994-04-27 1994-04-27 Method for processing of ash of thermal power plants for production of ferrum-containing pigment filler RU2073695C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94015581A RU2073695C1 (en) 1994-04-27 1994-04-27 Method for processing of ash of thermal power plants for production of ferrum-containing pigment filler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94015581A RU2073695C1 (en) 1994-04-27 1994-04-27 Method for processing of ash of thermal power plants for production of ferrum-containing pigment filler

Publications (2)

Publication Number Publication Date
RU94015581A true RU94015581A (en) 1996-09-20
RU2073695C1 RU2073695C1 (en) 1997-02-20

Family

ID=20155343

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94015581A RU2073695C1 (en) 1994-04-27 1994-04-27 Method for processing of ash of thermal power plants for production of ferrum-containing pigment filler

Country Status (1)

Country Link
RU (1) RU2073695C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1002344C2 (en) * 1996-02-14 1997-08-15 Dsm Nv Granulate containing inorganic granules and methods for the preparation of the granulate and a mortar.

Also Published As

Publication number Publication date
RU2073695C1 (en) 1997-02-20

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