DE361758C - Process for the preparation of crystallized monocalcium phosphate - Google Patents

Process for the preparation of crystallized monocalcium phosphate

Info

Publication number
DE361758C
DE361758C DEH86184D DEH0086184D DE361758C DE 361758 C DE361758 C DE 361758C DE H86184 D DEH86184 D DE H86184D DE H0086184 D DEH0086184 D DE H0086184D DE 361758 C DE361758 C DE 361758C
Authority
DE
Germany
Prior art keywords
crystallized
calcium
preparation
phosphate
monocalcium phosphate
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
Application number
DEH86184D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEH86184D priority Critical patent/DE361758C/en
Application granted granted Critical
Publication of DE361758C publication Critical patent/DE361758C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • C05B11/12—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials For Medical Uses (AREA)

Description

Verfahren zur Herstellung von kristallisiertem 1Vlonokalziumphosphat. Bei den Verfahren, welche bezwecken, llonol<alziutnphosphat aus konzentrierten Lösungen von Rohphosphaten in Salzsäure mittels fertigen oder durch Einwirkung von kohlensaurem Kalk auf überschüssige Salzsäure enthaltende Rohphosphatlösung gebildeten Chlorkalziums in Kristallen abzuscheiden, werden stets Erzeugnisse erhalten, welche Chlorkalzium in wechselnden Mengen enthalten, und auch diese nur in ungenügender Ausbeute.Process for the preparation of crystallized 1vlonocalcium phosphate. In the case of processes which are intended to produce concentrated alonol from calcium phosphate Solutions of rock phosphates in hydrochloric acid by means of finished or by the action of carbonate of lime formed on rock phosphate solution containing excess hydrochloric acid To deposit calcium chloride in crystals, products are always obtained which Contain calcium chloride in varying amounts, and even these only in insufficient amounts Yield.

Dagegen erhält man gemäß vorliegender Erfindung ein von Chlorkalzium freies Erzeugnis in quantitativer Ausbeute, wenn die stark eingeengte, nicht über ioo° warme salzsaure Lösung eines Rohphosphates mit ausreichenden Mengen Chlormagnesium in fester Form oder in konzentrierter Lösung vermischt wird. Das sich abscheidende primäre Kalziumphosphat wird in seidenglänzenden feinen Kristallen erhalten. Die Abscheidung wird durch Bewegen der Lösung beschleunigt. Die Kristalle werden, wie üblich, durch Abnutschen von der Mutterlauge getrennt.On the other hand, according to the present invention, one obtained from calcium chloride free product in quantitative yield, if the severely restricted, not over 100 ° warm hydrochloric acid solution of a rock phosphate with sufficient amounts of chlorine magnesium is mixed in solid form or in concentrated solution. The separating primary calcium phosphate is obtained in semi-gloss fine crystals. the Deposition is accelerated by moving the solution. The crystals will be like customary, separated from the mother liquor by suction filtration.

Enthalten die Phosphate (.wie z. B. die natürlichen Eisenphosphate) nicht ausreichende Mengen von Kalzium, so wird der Lösung Chlorkalzium hinzugefügt.Do the phosphates contain (such as the natural iron phosphates) insufficient calcium, calcium chloride is added to the solution.

Um die Temperatur der Lösung auf der erforderlichen Höhe zu erhalten, werden entweder erhitzte Lösungen des Chlormagnesiums oder geschmolzenes Magnesiumehlorid eingetragen. Die in der Lösung vorhandene freie Salzsäure kann vor dem Zusatz des Salzes mittels zweckmäßig gefällten Di- oder Trikalziumphosphats neutralisiert werden.To keep the temperature of the solution at the required level, are either heated solutions of magnesium chloride or molten magnesium chloride registered. The free hydrochloric acid present in the solution can before the addition of the Salt can be neutralized by means of appropriately precipitated di- or tricalcium phosphate.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von kristallisiertem Monokalziumphosphat, dadurch gekennzeichnt, daß stark konzentrierte Lösungen von Kalziumphosphaten bzw. ausreichende Mengen von Kalzium enthaltenden Rohphosphaten in Salzsäure mit Chlormagnesium vermischt werden. PATENT CLAIMS: i. Process for the production of crystallized monocalcium phosphate, characterized in that highly concentrated solutions of calcium phosphates or sufficient amounts of calcium-containing rock phosphates in hydrochloric acid are mixed with chloromagnesium. 2. Verfahren gemäß Anspruch i, dadurch gekennzeichnet, daß Phosphatlösungen, welche nicht ausreichende Mengen Kalzium enthalten, Chlorkalzium zugefügt wird.2. The method according to claim i, characterized in that phosphate solutions which do not contain sufficient amounts of calcium contain calcium chloride is added.
DEH86184D 1921-07-10 1921-07-10 Process for the preparation of crystallized monocalcium phosphate Expired DE361758C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH86184D DE361758C (en) 1921-07-10 1921-07-10 Process for the preparation of crystallized monocalcium phosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH86184D DE361758C (en) 1921-07-10 1921-07-10 Process for the preparation of crystallized monocalcium phosphate

Publications (1)

Publication Number Publication Date
DE361758C true DE361758C (en) 1922-10-19

Family

ID=7164608

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH86184D Expired DE361758C (en) 1921-07-10 1921-07-10 Process for the preparation of crystallized monocalcium phosphate

Country Status (1)

Country Link
DE (1) DE361758C (en)

Similar Documents

Publication Publication Date Title
DE361758C (en) Process for the preparation of crystallized monocalcium phosphate
DE477386C (en) Generation of calcium hypochlorite
US2394570A (en) Production of potassium chloride and magnesia
DE548986C (en) Process for the production of acidic potassium-magnesium orthophosphates
GB715774A (en) Improvements in or relating to process for betaine recovery
DE443455C (en) Process for the production of potassium cyanide or potassium sodium cyanide from calcium cyanamide
DE383433C (en) Process for the production of crystallized magnesite
DE575320C (en) Production of Engel&#39;s salt (potassium bicarbonate-magnesium carbonate)
DE558722C (en) Manufacture of potassium nitrate and dimagnesium phosphate
DE403040C (en) Process for the production of barium oxide
DE406674C (en) Process for the production of carbonate or bicarbonate of sodium and ammonia
DE546491C (en) Process for the production of sulphate and hydrochloric acid from chlorides and sulfuric acid
DE571385C (en) Production of technically pure magnesium perchlorate
DE427651C (en) Process for the preparation of sodium silicofluoric acid
DE442646C (en) Process for the separation of naturally occurring sodium salts, such as thenardite and glauberite, from rock salt
DE539705C (en) Process for the production of potassium pentaborate
DE565902C (en) Process for the production of a phosphoric acid nitrogen fertilizer
DE570589C (en) Separation of trialkali phosphate from this and alkaline hydrolytically cleaved salts, e.g. B. sodium aluminate containing solutions
DE429767C (en) Process to increase the production and the phosphoric acid content of the Thomas slag
DE424129C (en) Process for the production of pure sulfuric acid clay
DE557725C (en) Production of potassium salts by converting potassium chloride into a potassium borate and decomposing the borate using an acid
DE445648C (en) Process for the preparation of derivatives of nuclear mercured phenols
DE381423C (en) Process for obtaining pure zinc sulfide
DE610097C (en) Manufacture of phosphoric acid
DE392036C (en) Process for the production of pure ammonium chloride in the ammonia-soda process