I.　Process　Introduction

Use　hydrochloric　acid　as　decomposition　agent　to　decompose　szaibelyite　ore,　purify　acidolysis　liquid　through　particular　procedures　to　achieve　pure　boric　acid　solution,　and　then　produce　finished　product　of　boric　acid　through　cooling,　crystallization,　dehydrating,　washing　and　drying.　Perform　purification　and　edulcoration　for　high　concentration　MgCl2　solution　generated　from　purification　procedure　and　use　it　to　prepare　magnesium　hydroxide　fire　retardant.　Boric　acid is　crystallized　mother　liquid　is　recycled.　The　achieved　boric　acid　has　uniform　particle　diameter,　white　color　and　various　impurity　indicators　superior　to　the　standard　of　products　of　the　same　category　in　Chile.　It　is　applicable　to　borosilicate　glass,　solar　energy,　optical　instrument,　electronics,　fine　boride　and　other　high　and　medium-end　application　fields.

II.　Technical　Advancement

It　can　reach　domestic　leading　standard　in　yield　control　(90%),　quality　control　(in　conformity　with　international　standard)　and　cost　control,　solving　the　problems　of　equipment　corrosion　and　comprehensive　utilization　of　mother　liquid　(mother　liquid　is　used　in　preparing　magnesium　hydroxide　fire　retardant　or　medical　(food)　grade　magnesium　carbonate,　magnesium　oxide).

III.　Market　Prospect

Chinese　total　annual　demand　for　boric　acid　is　above　310,000t.　Domestic　boric　acid　is　constrained　by　quality　and　other　factors,　its　application　is　limited　in　borosilicate　glass,　optical　instrument,　fine　boride,　new-type　boron-containing　material　and　other　fields.　The　demand　of　domestic　market　for　high　quality　boric　acid　has　increased　year　by　year.　The　present　high　quality　boric　acid　is　mainly　imported,　having　relatively　high　sales　price,　stable　market,　considerable　profits　and　broad　prospect.

IV.　Technical　Sources

Autonomous　research　and　development,　and　industrialization　has　been　realized.

V.　Product　Quality

　In　conformity　with　the　standard　of　products　of　the　same　category　in　Chile　and　Chinese　GB538-2006　premium　grade　product　standard.

VI.　Investment　Scale

5000t/a　is　2.5　million　Yuan,　and　the　scale　can　be　determined　according　to　the　actual　situation.

VII.　Environmental　Protection　

Comprehensive　utilization　of　mother　liquid　does　not　discharge　effluent　or　exhaust　gas.　The　production　process　generates　minute　quantity　of　boric　sludge　(boric　sludge　quantity　is　1/4　of　sulfuric　acid　method).　It　can　be　used　to　prepare　multi-element　compound　fertilizer.

VIII.　Economic　Benefits

Profit　per　ton　is　1,100-1,600　Yuan,　and　the　profit　space　is　relatively　big.

IX.　Form　of　Cooperation

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.