CN1454846A - Modified magnesium hydrate preparation technique - Google Patents
Modified magnesium hydrate preparation technique Download PDFInfo
- Publication number
- CN1454846A CN1454846A CN 03112355 CN03112355A CN1454846A CN 1454846 A CN1454846 A CN 1454846A CN 03112355 CN03112355 CN 03112355 CN 03112355 A CN03112355 A CN 03112355A CN 1454846 A CN1454846 A CN 1454846A
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- Prior art keywords
- magnesium hydroxide
- modified magnesium
- bittern
- brine
- define
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Abstract
The present invention is aimed at adopting brine ammonia water method to prepare high-quality modified magnesium hydroxide product. Said invention utilizes multiple tests to define the reasonable brine and ammonia water mixing ratio of 1:0.9-0.95, define reaction temp. of 38 deg.C-42 deg.C and define reaction time of 3-5 hr, and adopts a scientific brine purification method. In the prepared magnesium hydroxide 1.5-3% of selected modifying agent-silane coupling agent, etc. can be added, then through the processes of washing, filtering, drying and pulverizing can be addopted to obtain the qualified modified magnesium hydroxide product.
Description
One, technical field: the invention discloses a kind of technology of producing modified magnesium hydroxide
Two, background technology: produce modified magnesium hydroxide and generally adopt bittern-lime method or magnesia-hydrochloric acid-ammoniacal liquor method.And bittern ammoniacal liquor method never has industrialization owing to the reasons such as selection of purification, material ratio, temperature of reaction and the properties-correcting agent of bittern.The invention solves the problems referred to above, made qualified modified magnesium hydroxide product, make bittern ammoniacal liquor legal system modified magnesium hydroxide realize industrialization.
Three, summary of the invention: the objective of the invention is to adopt bittern ammoniacal liquor method, produce fine modified magnesium hydroxide product.It passes through test of many times, determined rational bittern: the ammoniacal liquor material ratio is 1: 0.9-0.95,38 ℃-42 ℃ of rational temperature of reaction and reaction times 3-5 hour have been determined, adopted the bittern purifying method of science, in the magnesium hydroxide that generates, 1.5-3% such as the properties-correcting agent-silane coupling agent that brings Selection In through washing, filtration, dry, pulverizing, make qualified modified magnesium hydroxide finished product again.
Four, description of drawings: do not have.
Five, embodiment: the purifying method that adopts science is with bittern purifying, according to the bittern of determining: ammoniacal liquor material ratio 1: 0.9-0.95, bittern, ammoniacal liquor are squeezed into reactor, control reaction temperature is between 38 ℃-42 ℃, reaction times was at 3.5 hours, react the properties-correcting agent-silane coupling agent 2.5% that brings Selection In after ending, to throw out filtration, washing, dry, pulverizing, system is carried qualified product again.
Claims (1)
1, a kind of technology of producing modified magnesium hydroxide, it is characterized in that: determined that rational bittern, ammoniacal liquor material ratio are 1: 0.9-0.95,38 ℃-42 ℃ of rational temperature of reaction and 3 hours-5 hours reaction times have been determined, adopted the bittern purifying method of science, in the magnesium hydroxide that generates, 1.5-3% such as the properties-correcting agent-silane coupling agent that brings Selection In through washing, filtration, dry, pulverizing, make qualified modified magnesium hydroxide finished product again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112355 CN1454846A (en) | 2003-04-27 | 2003-04-27 | Modified magnesium hydrate preparation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112355 CN1454846A (en) | 2003-04-27 | 2003-04-27 | Modified magnesium hydrate preparation technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1454846A true CN1454846A (en) | 2003-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03112355 Pending CN1454846A (en) | 2003-04-27 | 2003-04-27 | Modified magnesium hydrate preparation technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1454846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327940B (en) * | 2007-06-21 | 2012-02-01 | 天津长芦海晶集团有限公司 | Process for preparing solar salt from purified saturated bittern as raw material |
| CN103965655A (en) * | 2014-06-12 | 2014-08-06 | 北京化工大学 | Novel surface modification method of magnesium hydroxide fire retardant |
-
2003
- 2003-04-27 CN CN 03112355 patent/CN1454846A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327940B (en) * | 2007-06-21 | 2012-02-01 | 天津长芦海晶集团有限公司 | Process for preparing solar salt from purified saturated bittern as raw material |
| CN103965655A (en) * | 2014-06-12 | 2014-08-06 | 北京化工大学 | Novel surface modification method of magnesium hydroxide fire retardant |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |