Method for making artificial fiber pulp by whole hemp stalk

[0027] 1. Cutting: cutting length of hemp stalk: 20mm;

[0028] 2. Grinding and splitting: speed: 500r / min; natural bulk density: 150g / L;

[0029] 3. Cooking: charging volume: 140kg / m 3 ; Liquid ratio: 1:3.0; NaOH dosage: 8%; holding time: 180 minutes; holding temperature: 145°C;

[0030] 4. Bleaching: chlorine amount for chlorination: 1.5%; alkali amount for alkali refining: 3%; alkali refining time: 60 minutes;

[0031] Alkali refining temperature: 60°C; bleaching chlorine: 1.2%; bleaching temperature: 40°C;

[0032] Bleaching pH value: 13; Bleaching time: 90 minutes; Adding amount of sodium hexametaphosphate: 2‰;

[0033] 5. Finished product:

[0034] Fiber: 93.6%; Moisture: 10.1%; Viscosity: 10.3mpas; Whiteness: 80%; Ash: 0.13%; Iron: 18ppm; Pentose: 1.7%; Lignin: 0.23%;

[0036] 1. Cutting: cutting length of hemp stalk: 35mm;

[0037] 2. Grinding and splitting: speed: 350r / min; natural bulk density: 130g / L;

[0038] 3. Cooking: charging amount: 150kg / m 3 ; Liquid ratio: 1:4.0; NaOH dosage: 10%; holding time: 165 minutes; holding temperature: 155°C;

[0039] 4. Bleaching: chlorine amount for chlorination: 2.0%; alkali amount for alkali refining: 2%; alkali refining time: 75 minutes;

[0040] Alkali refining temperature: 70°C; bleaching chlorine: 0.8%; bleaching temperature: 42°C;

[0041] Bleaching pH value: 12; Bleaching time: 105 minutes; Adding amount of sodium hexametaphosphate: 2.5‰;

[0042] 5. Finished product:

[0043] A fiber: 93.8%; Moisture: 11.2%; Viscosity: 10.8mpas; Whiteness: 81%; Ash: 0.12%; Iron: 20ppm; Pentose: 1.9%; Lignin: 0.20%;

[0045] 1. Cutting: cutting length of hemp stalk: 50mm;

[0046] 2. Grinding and splitting: speed: 260r / min; natural bulk density: 120g / L

[0047] 3. Cooking: charging volume: 160kg / m 3 ; Liquid ratio: 1:4.5; NaOH dosage: 12%; holding time: 150 minutes; holding temperature: 165°C;

[0048] 4. Bleaching: chlorine amount for chlorination: 2.5%; alkali amount for alkali refining: 1%; alkali refining time: 90 minutes;

[0049] Alkali refining temperature: 60°C; bleaching chlorine: 0.5%; bleaching temperature: 45°C;

[0050] Bleaching pH value: 11; Bleaching time: 120 minutes; Adding amount of sodium hexametaphosphate: 3‰;

[0051] 5. Finished product:

[0052] A fiber: 93.5%; moisture: 9.8%; viscosity: 10.6mpas; whiteness: 80%; ash: 0.11%; iron: 17ppm; pentose: 2.2%; lignin: 0.15%; .