Magnesium Hydroxide as Neutralization Agent of Acid Wastewater

Commercial name: Brucite
Chemical content: Mg(OH)₂
Physical property of Magnesium Hydroxide: It is soluble in dilute acid and ammonium salt solution and it is almost insoluble in water and alcohol. Solubility of the Magnesium Hydroxide (18 ℃) is 0.0009 g / 100 g in water. It is easy to absorb carbon dioxide from the air. When heated to 350 ℃, it comes into magnesium oxide and water.
Application: Neutralization agent of acid wastewater.

Product feature for Neutralize acid wastewater:

1. No matter what kind of acid it neutralizes, its PH value is not more than 9.
2. Magnesium hydroxide is a relatively slow neutralizer. It will not scale even used to neutralize sulfuric acid.
3. Because of the activity and absorption ability of magnesium hydroxide, heavy metal will be absorbed during neutralization.
4. Magnesium hydroxide is uneasy for deposition; it is also featured with good liquidity, convenient transportation by pump and easy storage.
5. There is no need to use anticorrosive equipment since Magnesium hydroxide is not corrosive and it is completely non-toxic and harmless.

Data Sheet
Grade		XK-325	XK-1250	XK-5000	XK-10000
Mg(OH)2 content %		94	94	94	94
Moisture content %		0.5	0.5	0.5	0.5
Loss on ignition %		31	31	31	31
Particle Size	D97	45	18	6.5	3
	D90	38	15	5.5	2
	D50	15	4	2	1.5
Specific surface area (m2/g)		≤6	≤6	≤8	≤8
Density (g/cm3)		2.3	2.3	2.3	2.3
Oil absorption (ml/100g)		50	55	55	55
Whiteness (R45T%)		90	92	95	96
Specific conductivity (uS/cm)		350	350	350	350
Stearic acid %		0.5~2 (will be coated according to customer demands) Grade: XK-1250SA, XK-5000SA, XK-10000SA
Silane %		0.5~1 (will be coated according to customer demands) Grade: XK-1250S, XK-5000S, XK-10000S

Compare of the 4 Kinds of Neutralization Agent of Acid Wastewater

Item			Ca(OH)2	Sodium carbonate	Caustic soda	Mg(OH)2
Shape			Ca(OH)2 powder Ca(OH)2 35% sizing	Solid sodium carbonate or 15% solution	50% Solution	Mg(OH)2 58% sizing
Consumption	H2SO4		687KG(Solid)	982 KG(Solid)	741 KG(Solid)	541 KG(Solid)
	HCl		923KG(Solid)	1318 KG(Solid)	1000 KG(Solid)	727 KG(Solid)
Reacting time			Fast reacting until neutralized.		Fast and Intense reacting until neutralized	Moderation reacting until 95% neutralized
Solid		H2SO4	1600 KG(Solid)	1318 KG(Solid)	1318 KG(Solid)	1118 KG(Solid)
		HCl	1380 KG(Solid)	1460 KG(Solid)	1460 KG(Solid)	1266 KG(Solid)
Max PH value over dosage			12	>11	14	9
Sludge property			CaSO4 (Neutralize H2SO4 )	Like colloidal materials, absorb heavy metal together		Settling density is big, and absorb heavy metal
Safety			Medium dangerous materials		Dangerous materials	Safe materials
Environment characteristic			Over set PH value	Effluent is Sodium salt	Effluent is Sodium salt, may over set PH value	Buffer Solution when PH is 9

Packing

25kg/bag PP woven bag with PE liner/paper bag with PE liner
1000kg/bag, Jumbo bag

Storage

Store in dry and cool place, and keep away from moisture

Transportation

This is not dangerous product. Please make sure that there are covers avoid raining and moisture during transportation.