<p><b>偏矽酸鈣</b>，化學式為CaSiO<sub>3</sub>，用作高溫絕緣及防火。偏矽酸鈣沒有已知對健康有不利影響。偏矽酸鈣不溶於水。其礦物為矽灰石（Wollastonite）。
</p>


<h2><span id=".E9.AB.98.E6.BA.AB.E7.B5.95.E7.B7.A3"></span><span id="高溫絕緣">高溫絕緣</span></h2>
<p>偏矽酸鈣是常用替代石棉的一種安全隔熱材料。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>碳酸鈣與二氧化矽在高溫下反應，化學方程式如下：<br></p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {CaCO_{3}+SiO_{2}{\xrightarrow {\Delta }}CaSiO_{3}+CO_{2}\uparrow } }">
  <semantics>
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          <mi mathvariant="normal">C</mi>
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  </semantics></math></span></span><br></dd></dl><p>高爐的熔渣也是偏矽酸鈣，化學方程式如下：<br></p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {CaO+SiO_{2}} \;{\xrightarrow {\;}}\mathrm {CaSiO_{3}} }">
  <semantics>
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    <annotation encoding="application/x-tex">{\displaystyle \mathrm {CaO+SiO_{2}} \;{\xrightarrow {\;}}\mathrm {CaSiO_{3}} }</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E7.94.A8.E9.80.94"></span><span id="用途">用途</span></h2>
<p>用於陶瓷、塗料、塑膠、橡膠、磨料、電焊、聚合物、染料、冶金、建材、環保及石棉的代用品等。
</p>
<h2><span id=".E5.8F.83.E8.A6.8B"></span><span id="參見">參見</span></h2>
<ul><li>矽酸鈣板</li></ul><!-- 
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**偏矽酸鈣**，化學式為 CaSiO3，用作高溫絕緣及防火。偏矽酸鈣沒有已知對健康有不利影響。偏矽酸鈣不溶於水。其礦物為矽灰石（Wollastonite）。

## 高溫絕緣

偏矽酸鈣是常用替代石棉的一種安全隔熱材料。

## 製備

碳酸鈣與二氧化矽在高溫下反應，化學方程式如下： 

　
: $\mathrm {CaCO_{3}+SiO_{2}{\xrightarrow {\Delta }}CaSiO_{3}+CO_{2}\uparrow } $

高爐的熔渣也是偏矽酸鈣，化學方程式如下： 

　
: $\mathrm {CaO+SiO_{2}} \;{\xrightarrow {\;}}\mathrm {CaSiO_{3}} $

## 用途

用於陶瓷、塗料、塑膠、橡膠、磨料、電焊、聚合物、染料、冶金、建材、環保及石棉的代用品等。

## 參見

* 矽酸鈣板
13983-17-0