| 指标名称 |
指标 |
| 总磷酸盐(以P2O5计)含量% |
≥72.0 |
| 水不溶物 |
≤1.00 |
| PH |
1.8~2.2 |
| 外观 |
|
白色粉沫状或略带黑粉沫状 |
|
酸式六偏磷酸钠产品质量标准：
（无标准可借鉴，下面是自定指标）
分子式：Na4H2(PO3)6
分子量：568
用途：主要用于耐火材料中，作为粘接剂、固化剂，由于磷酸盐粘接的耐高温、耐辐射、高强度等性能，使其在耐火材料中应于越来越广泛，用来砌筑和修补炉体及烟道，尤其是喷涂炉体中起着其它材料不可替代的作用。酸式六钠由于本身含有氢离子，可以和碱性氧化物AL203、MgO作用，生成磷酸铝晶体，这些晶体使耐火材料颗粒粘在一起，在酸式六钠与碱性耐火材料的反应时产生大量热，大量热促耐火材料固化，加快耐炎材料硬化速度，减少修补炉壁喷涂时耐火材料向流淌，部分氢离子不完
全反应，在炉体加热过程中脱水生成聚磷酸盐，到1300℃左右形成聚磷酸玻璃，从而将耐火材料颗料粘接起来粘接部分也不与熔融金属相互渗透。其它详细反 应机理尚不全知。
|
|
Acid form hexametaphosphate (Food Grade)
Molecular Formula:Na4H2(PO3)6
Molecular Weight:568
Application:Mainly used in refractory materials
as the bond or curing(firming)agent.The high-tem
peratute resistance,radiation resistance,high strength
and other properties of the phosphate bond has made it
more widely used in refracrory materials.It is used to build
and mend the furnace body and flue.In funetions in the spray
furnace body,it is not to be replaced by any other material.As
it contains hydrogenions,it can prduce phosphal crystals under
its action with basic oxides Al203 and Mg0.These crystals bind
the refractory product and basic refractoyr materials,which cure
(firm)the refractory materials,quickening their hardening
|
| Names
of index |
Index |
| Total
phosphates(P2O5)% |
≥72.0 |
| Substances
not dissolves in wate% |
≤1.00 |
| PH |
1.8~2.2 |
| Appearance |
|
No
standard can be referred to.The following are self-made indices. |
speed
and reducing the flow of refactory materials at the time of furnace
wall spray repair.Some of the hydrogen ions do not completely action.
They dehydrate and generatc polyphosphate during the process of
the
furnace body heating.At about 1300,it forms polyphosphate glass
so
that the refractory particles and bond.The bond part and the molten
metals do not penetrate each other.The other detailed action mechanisms
are not wholly known.
|
