I.　Process　Introduction:　

First　calcine　magnesite,　then　pulverize　and　prepare　magnesium　oxide　powder.　Make　magnesium　oxide　powder　to　perform　hydration　reaction　with　water　with　the　existence　of　aid　and　transform　into　magnesium　hydroxide.　Then　implement　refining,　modification　dehydrating,　drying,　pulverizing　and　packaging　for　magnesium　hydroxide　magma,　and　produce　flame-retardant　grade　magnesium　hydroxide.

II.　Technical　Advancement:　

Magnesium　conversion　rate　is　above　98%.　Product　quality　is　in　conformity　with　HG/t3607-2000　standard　and　flame-retardant　grade　standard　required　by　user.　The　production　cost　is　low,　and　the　benefits　are　significant.

III.　Market　Prospect:　

The　present　world　has　increasingly　high　requirements　for　environmental　protection,　environment-friendly　magnesium　hydroxide　fire　retardant　is　emphasized　by　all　countries.　Developed　countries　have　successively　made　huge　investment　in　research　and　development　and　frequently　developed　international　cooperation.　Magnesium　hydroxide　fire　retardant　has　been　widely　applied　in　various　plastic　products,　in　particular,　high　performance　magnesium　hydroxide　fire　retardant　for　wire　and　cable　is　even　popular　among　consumers.　With　rapid　development　of　Chinese　high　molecular　industry　and　constant　perfection　and　improvement　of　flame-retardant　regulations,　the　demand　for　fire　retardant　has　increased　accordingly.　As　non-toxic,　smoke-restraining　environmental　protection　inorganic　fire　retardant,　magnesium　hydroxide　is　in　very　urgent　need.

IV.　Main　Economic　and　Technological　Indicators:　

Production　of　1t　magnesium　hydroxide　requires　magnesite　(MgO　content45%)　1.81t;　coal　1.6t;　electricity　750kw·h;　and　water　17m3.　Production　cost　is　about　1,400　Yuan/t.　

Market　price　of　the　product　is　2,450　Yuan/t.

V.　Environmental　Protection:　No　disadvantageous　impact　on　the　environment.

VI.　Form　of　Cooperation　and　Service　Method:　

Technical　transfer.　Taking　responsibility　for　process　flow　design,　supporting　equipment　of　standard　equipment,　non-standard　equipment　manufacture　design,　equipment is　plane　layout　design,　equipment　installation　design,　pipe　network　design,　equipment　installation　guidance,　equipment　commissioning,　production　commissioning,　training　for　production　engineers,　analysis　staff　and　technicians,　process　operation　specifications,　raw　material　and　product　analysis　method,　and　preparation　of　intermediate　control　analysis　method;　ensuring　output,　yield　and　quality　to　reach　the　standard;　and　undertaking　turn-key　projects.