I.　Process　Introduction:　

First　conduct　pretreatment　of　magnesite　or　boric　sludge,　then　digest　clinker　under　certain　conditions　to　achieve　heavy　magnesium　water　through　carbonization　and　filtration.　Under　certain　conditions,　pyrolyze　heavy　magnesium　water　to　achieve　basic　magnesium　carbonate　precipitation,　then　perform　filtration　and　drying　to　achieve　light　magnesium　carbonate.　Conduct　heat　treatment　of　magnesium　carbonate　wet　cake　to　achieve　magnesium　oxide.　Adjust　process　conditions　to　produce　nanometer　grade　high-purity　magnesium　oxide　or　highly　active　magnesium　oxide.

II.　Technical　Advancement:　

Magnesium　conversion　rate　is　over　85%,　product is　main　content:　magnesium　carbonate　41-42.5%　(calculated　according　to　MgO);　and　magnesium　oxide　is　within　96.5%-99.5%.　The　produced　active　nanometer　grade　magnesium　oxide　has　iodine　adsorption　value　165mgI2/gMgO,　and　average　particle　diameter　26nm.

III.　Market　Prospect:　

Magnesium　salt　products　represented　by　magnesium　oxide　and　magnesium　carbonate　have　prospecting　international　market　situation,　Chinese　annual　export　volume　accounts　for　about　60%　of　aggregate　production,　belonging　to　the　important　products　earning　foreign　exchange　through　export.　With　the　construction　and　development　of　national　economy,　domestic　medicine,　food,　rubber,　plastics,　electronics,　fire-proof　material,　domestic　chemical　engineering,　ceramics,　metallurgy　and　other　industries　have　growing　demand　for　magnesium　compound,　and　the　market　demand　is　prosper.　Therefore,　its　market　and　development　prospect　is　very　broad.

IV.　Forecast　of　Economic　Benefits:　

Comprehensive　production　cost:　magnesium　carbonate　is　2,300-2,400　Yuan/t,　magnesium　oxide　6,500　Yuan/t,　factory　price　respectively　3,500-3,800　Yuan/t　and　9,000-15,000　Yuan/t,　having　significant　economic　benefits.

V.　Environmental　Protection:　No　disadvantageous　impact　on　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.